Name ________________________________
Quiz: Periodic Table of Elements, Chemical Formulas, and Molecules
Periodic Table of Elements
1. How many elements occur naturally on Earth? (1 pt)
a. 62
b. 72
c. 82
d. 92
2. How are the other elements made? (1 pt)
a. artificially
b. analytically
c. accidentally
d. astronomically
3. What elements does the Earth's crust have more of? (1 pt)
a. oxygen, hydrogen
b. oxygen, silicon
c. oxygen, nitrogen
d. oxygen, helium
4. What element is mostly found in the Universe? (1 pt)
a. hydrogen
b. argon
c. neon
d. helium
5. Identify the following parts: (8 pts)
29
Cu
Copper
63.546
6. How many groups/families are in the Periodic Table of Elements?
a. 7
b. 10
c.15
d. 18
7. How many periods/rows?
a. 7
b. 10
c.15
d. 18
8. Where are the metals located?
a. on the left side of the zig zag/stairs
b. on the right side of the zig zag/stairs
c. on the top of the zig zag/stairs
d. on the bottom of the zig zag/stairs
9. Where are the non-metals located?
a. on the left side of the zig zag/stairs
b. on the right side of the zig zag/stairs
c. on the top of the zig zag/stairs
d. on the bottom of the zig zag/stairs
Chemical Formulas & Molecules
10. How many elements are in the compound H2SO4? (2 pts)
11. How many atoms are in the compound H2SO4? (2 pts)
12. The compound below is called silicon dioxide. What is its chemical formula?
13. How many atoms of hydrogen are in the following compound? (2 pts)
H2SO4
14. Circle the coefficients found in the list below. (2 pts)
CaCl2
4 H 2O
9 CO2
15. How many molecules of water are found below? (2 pts)
16 H2O
16. How many atoms of calcium are found in the compound below? (2 pts)
5 CaCO3
17. How many different elements are found in the following compound? (2 pts)
NaHCO3
(2 pts)
18. List 10 elements and their symbols. (2 pts each)
Example:
Copper
Cu
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