Chemical Review Grade: 7th Subject: Science Date: 2015

What is an element made up of? 1 What is an element made up of? A Compounds B Mixtures C Atoms D Substances

2 If an element has an atomic mass of 15 and atomic number of 7 then how many neutrons are there? A 15 B 22 C 7 D 8

3 If an element has an atomic mass of 27 and atomic number of 13 then how many protons are there? A 15 B 8 C 22 D 13

4 If an element has 12 neutrons and 10 protons, then what is the atomic mass? A 12 B 8 C 22 D 10

5 What does the “group/family” number tell us about an element? A The number of total electrons B The number of valence electrons C How many shells it has D How many energy levels it has

6 A capital letter or a combination of a capital letter and a small letter that is used to represent an element is called __ A Chemical formula B Electron cloud C Chemical symbol D Isotopes

7 What are the horizontal rows of elements called? A Groups/families B Periods C Quarks D Table

8 What are the vertical columns of the Periodic Table called? A Groups/families B Periods C Quarks D Table

9 The number of protons in an atom is the_____. A Mass number B Average atomic mass C Atomic number D Isotopes

10 What is the center of an atom where protons and neutrons are located called? A Nucleus B Electron C Compound D Metalloids

11 The Periodic Table is arranged by___. A Atomic mass B Periods C Atomic number D Groups/families

12 Each energy level of an atom has a maximum of ____ it can hold. A Neutrons B Protons C Quarks D Electrons

13 The chart that shows the classification of 
elements is called the: A Atomic number B Periodic Table C Average atomic mass D Mass number

14 In the current model of the atom, where are the electrons located. A Metalloids B Nucleus C Atomic model D Electron cloud

15 These are elements in groups 3 through 12 of the periodic table. A Transition metals B Metalloid C Noble gases D Radioactive element

16 Which group/family makes up the alkali metals? A Group 1 B Group 2 C Group 3 D Group 4

17 Which group/family makes up the alkali earth metals? A Group 1 B Group 2 C Group 3 D Group 4

Which group/family makes up the halogens? 18 A Group 1 B Group 3 C Group 5 D Group 7

19 Which group/family makes up the noble gases? A Group 2 B Group 4 C Group 6 D Group 8

20 In which group does sodium belong? A Metal B Nonmetal C Metalloid D None of the above

21 In which group does Krypton belong? A Metal B Nonmetal C Metalloid D None of the above

22 In which group does Silicon (Si) belong? A Metal B Nonmetal C Metalloid D None of the above

23 How many valance electrons does Boron (B) have? A 2 B 5 C 3 D 13

24 How many valance electrons does Sodium (Na) have? A 1 B 2 C 3 D 11

25 How many valance electrons does Carbon (C) have? A 6 B 4 C 13 D 3

26 How many valance electrons does Argon (Ar) have? A 18 B 8 C 3 D 7

27 What element is this? A Neon B Fluorine Sodium C D Magnesium

28 What element is this? A Neon B Krypton C Argon D Potassium

Answer Key 1. C 11. C 21. B 2. D 12. D 22. C 3. D 13. B 23. C 4. C 14. D 24. A 5. B 15. A 25. B 6. C 16. A 26. B 7. B 17.B 27. C 8. A 18.D 28. B 9. C 19.D 10. A 20.A