Atomic Structure and Periodic Table

9. Classify each of the following as a metal or nonmetal: usually gains electrons

6. Match the group number with its family: Alkali Metals

9. Classify each of the following as a metal or nonmetal: Carbon

6. Which family does the following element belong to: Kr

6. Which family does the following element belong to: Na

25. C-12 & C-14  are examples of __________________________

10. Which family donates one electron to become stable?

3. What is the mass number of an isotope of sulfur that has 18 neutrons?

2. Na⁺ has ___________ electrons.

1. Neutrons have a _______________________ charge.

9. Classify each of the following as a metal or nonmetal: become anions

9. Classify each of the following as a metal or nonmetal: Sulfur

9. Classify each of the following as a metal or nonmetal:left side of the periodic table

18. Match the scientist with the contribution: found the electrons

10. Which family accepts one more electron to become stable?

1. Electrons have a ______________________ charge.

6. Which family does the following element belong to: Cl

8. Match the group number with its family: Alkaline Earth Metals

21. Match the scientist with the contribution: modern periodic table-atomic #

24. Cu¹⁺ & Cu ⁺² are examples of __________________________

9. Classify each of the following as a metal or nonmetal: Bromine

28. ⁴⁰ ₁₉ K ⁺¹ has how many protons, neutrons, and electrons?

How many protons, neutrons, and electrons does Neon-21 have?

23. Na⁺ & Ca ⁺² are examples of __________________________

27. Write the symbolic notation for the isotope of fluorine with 12 neutrons.

11. Why do elements in the same family have similar chemical properties?

6. Which family does the following element belong to: Ca

9. Classify each of the following as a metal or nonmetal: Calcium

19. Match the scientist with the contribution:Electrons move around the nucleus in fixed shells

9. Classify each of the following as a metal or nonmetal: become cations

7. Match the group number with its family: Noble Gases

5. Match the group number with its family: Halogens

1. Protons have a _______________________ charge.

17. Match the scientist with the contribution: named the atom

22. Identify the atom in the picture. How many valence electrons does this atom have?

15. Match the scientist with the contribution: Discovered the nucleus

13. An unknown element is a gas, has 8 valence e- and non reactive.Identify the element

9. Classify each of the following as a metal or nonmetal:right side of the periodic table

9. Classify each of the following as a metal or nonmetal: Lithium

16. Match the scientist with the contribution: confirmed the existence of the atom

9. Classify each of the following as a metal or nonmetal: Chlorine

20. Match the scientist with the contribution: first periodic table-atomic mass

26. To change Ca to Ca²⁺ you need to __________________(add/remove) how many electrons?

4. What is the symbolic notation of an isotope nitrogen that has 9 neutrons?