Name: _________________________________________________ Class: ___________________

Regents Chemistry 10H – General Chemistry Review Questions Date: ___________________

1. What is the total mass of the protons in an atom of gold-198? __________

2. Which two subatomic particles are located in the nucleus of an atom?

_____________________ & _____________________

3. Categorize the following compounds as containing COVALENT bonds or IONIC bonds.

a. NaOH _____________________________

b. Ca(OH)2 _____________________________

c. CH3OH _____________________________

d. CO2 _____________________________

e. NaCl _____________________________

4. Categorize the following elements as nonmetals or metals.

a. Sodium _____________________________

b. Carbon _____________________________

c. Sulfur _____________________________

d. Tin _____________________________

5. State whether or not the following substances are considered a compound or not a compound

a. CO(g) _____________________________

b. O2(g) _____________________________

c. C(s) _____________________________

6. What is the sum of the charge of a neutron and the charge of a proton? __________

7. From the choices below, which quality can vary among atoms of the same element? _________

Choose One: (1) Mass Number, (2) Atomic Number, (3) Number of Protons OR (4) Number of Electrons

8. What subatomic particle has a mass of 1/2000 the mass of a proton? _______________

9. An atom with 55 protons and 56 neutrons is an isotope of the element _______________.

10. An atom with 42 protons and 43 electrons is an ion of the element _______________.

11. What is the mass number of a carbon atom with 6 protons, 8 neutrons and 6 electrons? __________

12. State whether or not the following elements are metalloids or not.

a. Aluminum _____________________________

b. Aresenic _____________________________

c. Gold _____________________________

13. State whether or not the following substances can be chemically decomposed or not.

a. Octane _____________________________

b. Antimony _____________________________

c. Methane _____________________________

d. Xenon _____________________________

e. Einsteinium _____________________________

14. One mole of krypton gas has a mass of _______ grams.

15. Name one element with a stable valence electron configuration. _____________________

Answers

1. 79 amu

2. Neutrons, protons

3. .

a. Ionic

b. Ionic

c. Covalent

d. Covalent

e. Ionic

4. .

a. Metal

b. Nonmetal

c. Nonmetal

d. Metal

5. .

a. Yes

b. No

c. No

6. 1 (1+)

7. 1

8. Electron

9. Cesium

10. Molybdenum

11. 6

12. ,

a. No

b. Yes

c. No

13. .

a. Yes

b. No

c. Yes

d. No

e. No

14. About 83.7 grams.

15. Any of the following: Helium, Neon, Argon, Krypton, Xenon, Radon, Uuo