Question 1. The chemical name for table salt is sodium chloride, or simply NaCl. What type of chemical is NaCl?
Compound
Ion
Element
Molecule
Question 2. While the maximum number of electrons required to fill the outermost shell of an atom varies depending on the size of the atom, almost all of the smaller atoms (atomic numbers 2-20) are considered stable (nonreactive) when they contain ________ electron(s) in the outermost shell.
1
8
16
2
Question 3. Which number represents the atomic weight of carbon?
6
18
12
Not enough information given
Question 4. How many neutrons are in a typical carbon atom?
12
6
18
Not enough information given
Question 5. What is the most common element in your body?
Sugar
Carbon
Oxygen
Water
Question 6. The octet rule states that the outermost shell (valence) can hold up to ___ electrons
8
3
2
4
Question 7. The typical carbon atom is described in the periodic table by the accompanying box. How many protons are in a typical carbon atom?
18
6
12
Not enough information given
Question 8. Identify the reactants in the following chemical reaction: C10H8 + 12 O2 → 10 CO2 + 4 H2O
10 CO2 and 4 H2O
C10H8 and 12 O2
C10H8 and 10 CO2
12 O2 and 4 H2O
Question 9. Identify the part of the atom that most determines the chemical reactivity of the atom.
The number of neutrons
The number of electrons
The number of shells
The number of protons
Question 10. Which is not one of the four atoms that make up the bulk of living organisms?
Nitrogen
Oxygen
Calcium
Carbon