Igcse periodic table worksheet with answers. Dec 3, 2023 · File previews. com Periodic Table Author: Michael Dayah Created Date: 2/6/2017 12:38:25 AM E. Elements in the same group have similar chemical properties. Use the periodic table to find the numbers of protons, neutrons, and electrons for atoms of the following elements. A worksheet with questions on the Periodic Table for Year 8. The MME Chemistry cards cover all the major topics areas within the AQA GCSE Chemistry specification. 36 MB. The following elements must be written as molecules as they exist in nature as two atoms joined together: H 2, N 2, O 2, F 2, C l2, Br 2 and I 2. Note: The electron configurations in this worksheet assume that lanthanum (La) is the first element in the 4f block and that actinium (Ac) is the first element in the 5f block. The periodic table May 5, 2024 · The periodic table worksheetPeriodic worksheet table pdf printable template Periodic table worksheet worksheets printable elements blank homeschooling read example chart find places search fun middle practice made charts sheetExploring the periodic table worksheet answers. Using the Periodic Table of Elements Sheet 1. Where, generally, are the metals located on the periodic table? 35. Insert for GCSE Chemistry (8462), Combined Science: Trilogy (8464), and Combined Science: Synergy (8465) papers v1. The electronic structure of ions of elements in Groups 1, 2, 6 and 7 will be the same as that of a noble gas - such as helium, neon, and argon. Its electronic configuration is 2,8. On this dedicated page you will be able to revise metals and non-metals, the transition elements, group 0 and group 1 Feb 4, 2019 · Ca. com Nov 29, 2021 · pdf, 55. (b)any three. This pack includes: Periodic Table. observations such as: floats on water moves about. The figure below shows an atom with two energy levels (shells). Stuck? Did this page help you? Questions and model answers on 2. Jun 25, 2023 · Periodic Table _IGCSE_Chemistry_Worksheet and Ans Key. IGCSE Chemistry - Groups of the Periodic Table The Periodic Table Mark Scheme 2 Level IGCSE(9-1) Subject Chemistry Exam Board Edexcel IGCSE Module Single Award (Paper 2C) Topic Principles of Chemistry Sub-Topic The Periodic Table Booklet Mark Scheme 2 54 minutes /45 /100 9 8 7 6 5 4 3 >90 %80 %70% 60% 50 40 30% 2 1 20 10% Time Allowed: Score: Percentage: Grade Boundaries: www. education What change occurs to an atom when it forms a negative ion? It loses electrons. Periodic table worksheet answers lesson chapter pdfPeriodic table worksheet with answers printable pdf download Printable periodic tables (free download)Worksheet: blank periodic t by travis terry. Apr 14, 2017 · Period: is a horizontal row of the periodic table . Including a variety of questions and completing sentences. -Arrangement of elements in periodic table. States of Matter. Resource type: Worksheet/Activity. A combination of two or more substances (elements and/or compounds) that are not chemically combined. 2 Ions & Ionic Bonds for the CIE IGCSE Chemistry syllabus, written by the Chemistry experts at Save My Exams. GCSE and IGCSE Periodic Table Worksheets – Chemactive. List the symbols for two transition metals. Chemical amounts are measured in moles. The element that has the atomic number 17 is? 5. b two non-metals that you breathe in. Q7. 85. Q1 (a) Fewer than one quarter of the elements are non-metals. 96 KB. iron, aluminium, copper b. 10 to 3 The PERIODIC TABLE introduction question exercise for IGCSE/GCSE chemistry Some basic questions and ideas on the structure of the Periodic Table in terms of metals, non-metals, groups, periods, electron arrangements, alkali metals, noble gases, halogens, transition metals. Are malleable (can be hammered and made into different shapes) and ductile (can be drawn into wires) Tend to be lustrous (shiny) Have high density and usually have high melting points. 1 All about matter. Names of groups in the periodic table 4. What is the atomic mass of mercury? 3. groups. (Free PDF) A set of flexible GCSE periodic table revision resources available as an A3 revision mat, A4 worksheets or an interactive PowerPoint. 10 You know the mass of anhydrous sodium sulfate (1. Jul 26, 2023 · Periodic table worksheet answer key pdfPeriodic worksheet table key answer chemistry worksheets answers atomic science sciencenotes notes trends printable number school mass elements element pdf Periodic table answers worksheet docx mbPeriodic table worksheets with answers. Conduct heat and electricity. Start your journey towards success today and unlock 1. The pack includes a PowerPoint, activities, exam-style questions and teaching ideas. Complete the table to show the number of electrons, neutrons and protons. com ATOMIC STRUCTURE, PERIODIC TABLE WORKSHEET AND ANSWER 2 TOTAL 10 www. b The mass of the empirical formula is 4 × 12 + 8 × 1 + 16 = 72. chemactive - The active way to learn chemistry! Aug 19, 2023 · Periodic worksheet chemistry gcse packet metalsClassification of elements and periodicity in properties worksheet Worksheet periodic table key worksheets properties activity groups answers metals puzzle periods worksheeto elements chemistry science printable via basics visitProperties of atoms and the periodic table worksheet answers. The answer key can be found on the next page. The document contains a periodic table worksheet with questions about periodic trends, groups, periods, triads, and properties of elements. Mar 8, 2021 · Print free chemistry worksheets and handouts to enhance student learning. Mixtures can be separated by physical methods such as filtration or evaporation. 1. Metals and Non-metals. * The Lanthanides (atomic numbers 58 – 71) and the Actinides (atomic numbers 90 – 103) have been omitted. 3. 2 Using only the Periodic Table to help you, write down everything you can about: a nitrogen b magnesium. What is the atomic symbol for silver? 2. This is an engaging revision lesson which uses a range of exam questions, understanding checks, quiz tasks and quiz competitions to enable students to assess their understanding of the content within topic 9 (The Periodic Table) of the Cambridge IGCSE Chemistry (0620) specification. Answers. The symbols for the gas inside is written on each balloon. In the periodic table the columns are known as periods. Particle diagram showing elements, compounds and mixtures. Particles, atomic structure, ionic bonding, the Periodic Table – answers. Since this is equal to the relative formula mass, the molecular formula is the same as the empirical formula, that is C4H8O. Other contents: Past year exam questions. 1 Atomic Structure & the Periodic Table. tennessine. non-metal, atom contains 7 protons, 7 electrons, 7 neutrons, two electron shells so electron distribution is 2. 42 g). Names of elements found in particular groups 5. When an atom becomes a cation, what happens to its radius? 34. Matching pair quiz on Atomic and electronic structure and the Periodic Table. com*Dynamic Build on home learning with Beyond. Aug 25, 2022 · A revision homework or class worksheet with answers that covers The Periodic Table in C1 GCSE Chemistry. Age range: 14-16. Some common properties / trends in properties include: Group I elements react very quickly with water. Periodic Trends Worksheet with Answers - DSoftSchools Apr 24, 2023 · Periodic table worksheet answer key pdf : 12 best images of periodic Periodic printable table tables simple activity sciencenotes via Protons neutrons electrons periodic atoms counting worksheeto Protons, Neutrons, and Electrons Practice Worksheet. bursts into flame. GCSE/IGCSE m/c Quiz on Noble Gases. Printable Periodic Table PDF. Periodic Table structure question (up to UK higher level) * Periodic Table Packet #1 Name_____ Period_____ Directions: Use your Periodic table to complete the worksheet. Carbon has 6 electrons, 2 in the 1st shell and 4 in the 2nd shell. (1) Jun 3, 2023 · comment 138 Views. School subject: Chemistry (1061818) Main content: Atomic Structure (2009262) From worksheet author: Questions on atomic structure - taken from past year papers of IGCSE 620 papers. Jun 1, 2023 · Periodic worksheet table worksheets printable key answer science sciencenotes notes school elements answers element grade pdf use chemistry find informationWorksheet periodic table answer key Chemistry periodic table worksheet 2 answer keyPeriodic resumes rational graphing. Period 1 has only two elements (hydrogen and helium), while periods 2 and 3 have 8 elements. a. oxygen, nitrogen (or a noble gas other than helium) 2 a. Now that atomic structure is understood, the modern periodic table organises elements by increasing atomic/proton number. Giant Periodic Table crossword puzzle. [294] Ts. 02 x 1023 particles; this number is known as the Avogadro Constant. This can be atoms, molecules or ions. The diagram shows what happens. Then click the add selected questions to a test button before moving to another page. Ni is the symbol for what element? 4. 117. We have worksheets for the following topics in Chemistry Paper 1: Atomic Structure and The Periodic Table. (Subscribers only) GCSE periodic table revision activities Cambridge IGCSE Chemistry Topic 9: The Periodic Table Group properties Notes www. 1 Solids, Liquids & Gases. The mole, symbol mol, is the SI unit of amount of substance. Periodic Table Notes with links to Group and Series Notes Metals in a block in the middle of the periodic table between groups 2 and 3 46 Conduct heat; conduct electricity; react with non-metals to form ionic compounds; shiny when Where a symbol contains two letters, the first one is always written in uppercase letters and the other in lowercase e. View PDF List. Most of the printables are PDF files, although some are available as JPG or PNG files. (c) The elements in Group 7 the halogens, and Group 0 the noble gases, have the typical properties of non-metals - they have low melting points and boiling Use the periodic table on the Data Sheet to help you to answer these questions. pdf, 161. Periodic Table Worksheet 1: Periodic Table Worksheet 2: Balancing Chemical Equations Worksheets. 50. The table is arranged in vertical columns called groups and in rows called periods. (a)a)Complete the table for some of the elements in Period 3. Age range: 11-14. [5 marks] GCSE Combined Science Foundation Combined Science Higher Chemistry Foundation Chemistry Higher AQA. The Group I metals: Are soft and easy to cut, getting even softer and denser as you move down the Group (sodium and potassium do not follow the trend in density) Have shiny silvery surfaces when freshly cut. 3 Only two groups in the table are completely non-metal. The 8 columns of the periodic table are called groups. The worksheet can be used to test understanding of IGCSE concepts of periodic properties such as-. density. File previews. The meaning of 'group number' and how this relates to reactivity trends 2. Group: These are the vertical columns What is the general trend of ionization energy as you go down a group on the periodic table? 32. GCSE Chemistry revision cards are the perfect revision tool to help You improve your grade. e. g. Not only does this pack include the worksheets and an associated Periodic Table for reference, the answers are also attached meaning you 2 In the Periodic Table, the elements are arranged in columns called Groups and in rows called Periods. Period: These are the horizontal rows that show the number of shells of electrons an atom has and are numbered from 1 - 7. 16. Apr 23, 2024 · FREE printable A3 revision mat for reviewing the periodic table at GCSE. The PDF of this worksheet includes a copy of a printable black and white periodic table. One mole of a substance contains the same number of the stated particles. (i) State the number of the group in the Periodic Table in which this element is found. 0 license and was authored, remixed, and/or curated by Robert Carter. Beyond's Atoms, Elements and Compounds Worksheets can be easily integrated into home learning, everything you need to use these worksheets is included in this single bundle. Question 4: Compare the trend in reactivity between the group 7 and group 0 elements. (1) Jun 9, 2014 · The trends across the Periodic Table are covered in Worksheet 3. 5 KB. Core 1. Periodic table worksheet answer worksheets key chemistry printable science answers atomic sciencenotes notes trends number mass elements element grade pdfPeriodic atomic atoms lessonplanet milky Atoms and periodic table worksheetPeriodic table worksheets with answers. The lesson begins by challenging students to recognise and explain why the electronic structure of group 1 and group 7 means that they react together easily. Cambridge IGCSE October 2018 Paper 3 Theory (Core) Q1 a & b. PERIODIC TABLE OF ELEMENTS. Properties of metals. 2. (Question answers) All my GCSE Chemistry Revision notes * email doc brown. melting point. Angie Erdman October 25, 2017 Uncategorized Leave a comment 138 Question Bank Paper 4 Atomic Structure & The Periodic Table QB – 1 Atomic Structure & The Periodic Table MS – 1 Atomic Structure & The Periodic Table QB – 2 Atomic Structure & The Periodic Table MS – 2 We have plenty of useful year 7 science revision worksheets, to help with important topics like year 7 chemical reactions, year 7 cells and many more; we can help your child gain a good understanding of what might come up on a year 7 science test! Along with our worksheets we also have year 7 science test papers with answers to give your child Feb 5, 2024 · Click on the link below: Periodic Table Answers; Description. Doing so gives a predictable, periodically repeating pattern of chemical properties that repeats every 8 elements. C) The element is located in period 2 and is an alkali metal. You will learn the not only find the atomic number, mass, and symbol, but you will learn how to translate that to a a number of protons, neutrons, and electrons for a stable atom. 14 Mid-table elements Coursebook questions 3. Increasing order of atomic masses. 8. It gains protons. 3 Use the the Periodic Table on page 2 to answer this question. 3. , sodium is Na, not NA. 26 KB. 3 (i) State the number of the group in the Periodic Table in which this element is found. The Periodic Table Question Paper 3 Level IGCSE ExamBoard CIE Topic The Periodic Table Sub-Topic Paper (Extended) Theory Booklet Question Paper 3 82 minutes / 68 TimeAllowed: Score: Percentage: /100 Subject Chemistry www. com Paper 4 Question 3. pptx, 44. Worksheet periodic table trends worksheet periodic table trends unit 4 review sheet key chemistry a study of matter worksheet. The profit from every pack is reinvested into making free content on MME, which benefits millions of learners across the country. The group number corresponds to the number of electrons in the outer shell. (a) (i) The symbol for silver is (1) A Ag B As C S D Si (ii) The element with an atomic number of 40 is (1) A Al B Ar C Ca D Zr (b) An atom of an element has the electronic configuration 2. Four elements from the periodic table are described below. There are seven periods in the periodic table, with each one beginning at the far left. £ 9. Electronic configurations can also be written for ions. b. This is a collection of free printable periodic tables in PDF file or PNG image format to save, print, and use. - Groups and periods in periodic table. More Topics. Feb 4, 2015 · Students use a periodic table to complete the missing information on 20 element cells. You can create printable tests and worksheets from these Grade 8 Periodic Table and Elements questions! Select one or more questions using the checkboxes above each question. pdf, 54. 1 Use the Periodic Table to find the names of: a three metals in common use around you. A double-sided worksheet and fully complete answer sheet which covers group 1 elements. Already have an account? IGCSE Chemistry Periodic Table quiz for 11th grade students. (1) 3 – all elements in group 3 will have 3 electrons in their outer shell. Several questions involve interpreting the Apr 28, 2023 · Free periodic table of the elements + more (12-page set of printablePeriodic table worksheet worksheets answer key chemistry printable science answers atomic sciencenotes notes trends mass number elements element grade pdf Periodic table basics worksheet answers key50 periodic table practice worksheet. Previous Page 1 of 14 Next. 1 The Periodic Table & Trends for the CIE IGCSE Chemistry syllabus, written by the Chemistry experts at Save My Exams. (a) Draw a ring around the correct answer to complete the sentence. D) The element is located in period 2 and is a halogen. igexams. This is a fully-resourced lesson about group 7 of the Periodic Table, the halogens, which includes a lesson presentation (34 slides) and a differentiated worksheet. Test your knowledge of atomic models, atomic number and calculating atomic mass. The atomic number and mass number also shown on the May 31, 2023 · Periodic table worksheetWorksheet: periodic table worksheet 1 by travis terry Periodic table worksheet teachingPeriodic table worksheet chemistry science worksheets school hunt middle element teaching scavenger physical education teacherspayteachers fill high key answer choose. The code letters A to Z have been assigned to the first 26 representative elements in the periodic table. atoms and the periodic table worksheet. Question 3: Describe and explain the trend in chemical reactivity in the group 1 alkali metals. They all have low melting points and low densities compared to Answer: The first element has one valence electron, and the last has eight valence electrons. Everything you need to kick-start this interesting topic! There are two copies of the periodic table: one in colour and one in An ion is an electrically charged atom or group of atoms formed by the loss or gain of electrons. pmt. It asks about valencies, formulas of ionic compounds, triads, contributions of Mendeleev and the law of octaves, periodicity, reactivity trends, and properties of groups like alkali metals and halogens. Apr 21, 2023 · 02. What were the criteria used by Mendeleev in creating his Periodic Table? Answer: Mendeleev used the following criterion in creating his periodic table. sand and water, oil and water, sulfur powder and iron filings. Question Answer Marks 4(a) B = 17; C = 18; D = 2,8; 2 – / 2; 4 4(b) Substance that cannot be broken down into anything simpler / substance that cannot be broken down (by chemical means) / substance containing atoms with the same atomic number or proton number; 1 4(c) number of protons number of neutrons number of electrons 1311 3111 Mar 18, 2021 · Country: Malaysia. Element A: This metal reacts vigorously with Oct 13, 2018 · docx, 13. Ptable's new, up-to-date periodic table PDF and wide periodic table PDF are layered so you can choose exactly what you want to print, and are the perfect companion to the periodic table classroom poster. 5 b. 7. Work sheet on Periodic Table history * AND Basic Periodic Table Task sheet worksheet * USEFUL LINKS GCSE level (~US grade 8-10), students aged ~14-16 . elements in period 2 have two electron shells, elements in period 3 have three electron shells. It loses protons. Your child can learn, practise and test their year 8 science topics and skills (age 12-13) with our automatically marked interactive year 8 science worksheets. The metallic character diminishes moving left to right across the Periodic Table. Take your O Level Chemistry studies to the next level with Mega Lecture! Access our wide range of meticulously crafted O Level Chemistry Notes and Worksheets, available for free download. Tes bundles containing this resource: Physical properties of the Group I metals. This is a collection of free chemistry worksheets and handouts to print. Groups 1-2 and Groups 13-18 make up the main groups, while Groups 3-12 are the transition metals. Addeddate 2021-02-12 04:13:38 Identifier igcse-periodic-table Scanner The atomic structure and the periodic table resource is the first lesson in the GCSE Atomic Structure and the Periodic Table unit. 08 KB. The size of an atom or ion and the attraction between the nucleus and the outermost electrons play important roles in determining the chemistry of an element. Multiple Choice. Zr. group number I II III IV V VI VII symbol Na Mg Al Si P S Cl number of valency electrons valency [2] (ii) What is the relationship between the group number and the number of valency . Isotopes are different atoms of the same element that contain the same number of protons but a different number of neutrons. The Periodic Table shows the elements together with their atomic (proton) number at the top and relative atomic mass at the bottom - there is a difference between relative atomic mass and mass number, but for your exam, you can use the relative atomic mass as the mass number (with the exception of chlorine) GCSE CHEMISTRY THE PERIODIC TABLE Medium Demand Questions QUESTIONSHEET 9 Farah has balloons filled with three different gases. fizzes. The object of this activity is to use the periodic properties of the elements to fill in the following chart. Use the chart and your knowledge of chemistry to complete the blanks for atoms of each element. This interactive quiz is for GCSE Chemistry (single science) students studying atomic structure. Dec 22, 2023 · Periodic table worksheet pdf. Relative atomic masses for Cu and Cl have not been rounded to the nearest whole number. One mole contains 6. The included periodic table can be downloaded separately here. For more practice, check out Periodic Table Worksheet #2. There are eight elements in the second row (lithium to neon) of the periodic table. All of these worksheets print cleanly on normal printer paper, plus you can resize them to fit your needs. Jan 1, 2018 · The Periodic Table Worksheet. Questions and model answers on 8. All resources are editable and come with answers. Some tables are available as slides in Google Apps. Mar 13, 2023 · This page titled 10A: Periodic Trends (Worksheet) is shared under a CC BY-NC-SA 4. From Mendeleev and the history of the periodic table to the alkali metals and the halogens, the periodic table contains many subtopics within it, each of which is very important for the Edexcel, OCR and AQA GCSE Chemistry exams. The symbol for an isotope is the chemical symbol (or word) followed by a dash and then the mass number. You can work out the mass of water of crystallisation. reactivity. Select All Questions. E. A sodium atom has 11 electrons, a sodium ion has lost one electron, therefore has 10 electrons; 2 in the first shell and 8 in the 2nd shell. Subject: Chemistry. (b) Non-metal elements are found in the groups at the right hand side of the periodic table. 7 Trends in the Periodic Table and Worksheet 3. The Periodic Table of Elements (for O Level Chemistry 5070) The Periodic Table of Elements (for O Level Chemistry 5070) TaughtWare. pdf, 487. It Dec 8, 2019 · docx, 39. A group in this table relates to the number of electrons in the outer shell of an atom. The modern periodic table lists over 100 elements. Where, generally, are the nonmetals located on the The periodic table in CIE's Chemistry IGCSE exam paper 2 and 4, taken from the 2019 variant. If your periodic table doesn’t agree with this, your answers for elements near the f-orbitals may be slightly different. Title: Ptable. Atomic structure and periodic table worksheet answer key → walteryAtomic structure worksheet answer key chemistry Atomic structure worksheet answers chemistryStructure atomic worksheet answers atoms worksheets science atom physical worksheeto compound answer diagram key via element. When an atom becomes an anion, what happens to its radius? 33. The number of shells remains identical in the same period. Extended Tier Only. B) The element is located in period 1 and is an alkali metal. rows. So C-14 ( or carbon-14) is the isotope of carbon which contains 6 protons, 6 electrons and 14 - 6 = 8 neutrons. sodium 1s22s22p63s1. This loss or gain of electrons takes place to obtain a full outer shell of electrons. This year, they’ll build upon topics and start their year 8 science revision, in preparation for their GCSE revision - alongside our science worksheets, we’ve also made year 8 Topic Questions. COMPLETE CHEMISTRY FOR CAMBRIDGE IGCSE: ANSWERS EDUCATALYST 1 CHAPTER 11 The Periodic Table PAGE 163 1 a. Handwriting; Spanish; Facts; Examples; Formulas Periodic Trends Worksheet with Answers - DSoftSchools Periodic Table Trends Worksheet Answers Chemistry A Study Of Matter. It gains electrons. Just open the file in a PDF reader supporting layers and begin customizing! Show all layers for a complete view 54. How 'group number' relates to outer shell electrons 3. lithium sodium 23 potassium 39 rubidium 85 caeslum 133 francium Be beryllium 12 Mg magnesium 24 calcium 40 strontium 88 barium 137 radium scandium 45 yttrium 89 57-71 IGSCE Chemistry answers. The lesson covers the content in both the core Feb 22, 2018 · Suitable for GCSE, IGCSE and pre-IB/AS - Level stduents, this crossword tests students’ knowledge of: 1. Worksheet 3. Get 20% off this resource with the discount code EXTRA20: Periodic Table Home Learning Worksheet GCSE. Past paper and exam-style questions organised by topic, with student-friendly answers written by teachers and examiners. (a)(i) To which group of the periodic table do the gases belong? These trends in properties occur down groups and across the periods of the Periodic Table. Find other quizzes for Chemistry and more on Quizizz for free! A) The element is located in period 1 and is a Group II Metal. (b) An atom of an element has the electronic configuration 2. Its electronic configuration is 2,4. 93 KB. As a result, we can use the Periodic Table to predict properties such as: boiling point. The lesson pack covers atoms, elements and isotopes. . A period on the Periodic Table represents a new energy level being used to hold the outer electrons. com- Prescribed by CIE for examination in 2016. Atoms, Elements & Compounds. A new period begins when a new principal energy level begins filling with electrons. v1 4Y11Cambridge IGCSE Chemistry– past and specimen paper questions and answers. View Product. Periodic Table Trends Worksheet Answers Chemistry A Study The active way to learn chemistry!GCSE and IGCSE Periodic Table Worksheets – Chemactive. Periodic table worksheetPeriodic gpb 50 periodic table practice worksheetPeriodic table worksheets with answers. She lets go of the balloons. (a) A condensation, B boiling, C freezing, D melting, E sublimation [1 for each] (b) gas – particles are far apart and move around randomly [1], colliding with each other occasionally [1] liquid – particles are closer together [1], they move relative to one another [1], colliding more often than. Enhance your knowledge and ace your exams with our comprehensive resources tailored for O Level students. 6. Calculating the number of each particle in an atom: # Protons = Atomic Number # Electrons = Protons # Neutrons = Atomic Mass – Atomic Number OR Big # - Small #. The answer sheet contains the worked answers and a mark scheme, making it useful to set as an assessment task or as a piece of marked homework. 34 KB. f. Basic Periodic Table Task sheet worksheet * gap-fill worksheet on the Periodic Table (harder 35); (easier 20) Quiz on the Names and Symbols of Elements. These periodic tables use accurate data for name, atomic number, element symbol, atomic weight, and electron configuration, obtained from the International Union of Pure and Applied 1. This resource contains 2 worksheets that can be used in class or as homework to enable your students to practice what they have learnt in the classroom. The worksheet is based on UK curriculum content, but it may be useful for other country’s Aug 5, 2023 · Atomic periodic atoms gcse Periodic table of elements worksheet answer key worksheet : resume examples Classification periodic periodicity Atomic structure worksheet periodic chemistry Periodic table atomic structure worksheet answer keyPeriodic aqa atomic Periodic table of the elements – paperzipPeriodic table worksheet. 12 The third period. bs vk vq dd pz si um wh la bc