1. Which of the following compounds is an example of an artificial sweetener?
Sucrose
Fructose
Sucralose
Glucose

2. Which of the following must always be true for any kind of chemical reaction?
The masses of the products and the reactants are equal
The mass of the products is greater than that of the reactants
The number of atoms in the reactants must change when products are formed
The reactants require the absorption of heat for a reaction to occur

3. How many neutrons does Polonium-209 have?
125 n0
209 n0
84 n0
293 n0

4. Predict the predominant type of bonding in carbon tetrachloride.
Covalent
Hydrogen
Ionic
Dipole-Dipole

5. When NaNO3 (aq) and CaCl2 (aq) combine, which of the following products are made?
A catalyst
A precipitate
A solvent
None of the above

6. Solution A has a pH of 3 and Solution B has a pH of 5. Which of the following is correct?
Solution A is approximately 100 times more acidic.
Solution A is approximately 2 times more acidic.
Solution B is approximately 100 times more acidic.
Solution B is approximately 2 times more acidic.

7. What percent of aluminium chloride is aluminium?
20.2%
25.0%
18.9%
30.4%

8. The Kinetic Molecular Theory states that all particles:
Are at complete rest until heated
Must always be in constant, random motion
Are in static equilibrium
None of the above

9. Which of the following is correct about hydrogen bonding?
Hydrogen bonding helps determine the shape of D.N.A.
Hydrogen bonding occurs only in water molecules
Hydrogen bonding is responsible for ice’s low density
A and C only

10. The pressure exerted by a gas results from
The mass of the particles
The collisions between the gas molecules and the container
The forces of repulsion between the gas molecules
The energy gain experienced by each particle

11. When the volume of a gas increases, which of the following happens?
The density of the gas decreases and the mass remains constant
The pressure of the gas decreases and the mass changes
The temperature of the gas decreases and the mass remains constant
The pressure of the gas increases and the mass changes

12. Which statement is true for a 2 mol sample of O2?
There are 1.20 × 1024 entities altogether
There are 1.20 × 1024 oxygen atoms
There are 2.40 × 1024 entities altogether
There are 6.02 × 1023 oxygen atoms

13. Which one of the following is NOT a property of a gas?
Low compressibility
More space in-between its particles
Takes up shape of container
More translational movement of particles

14. Which of the following statements is false?
Radon is an indoor air pollutant that can cause lung cancer
The combustion of fossil fuels is the most responsible for greenhouse gas emissions
Equal volumes of gases at the same temperature and pressure contain equal # of molecules
Individual ideal gas particles have both size and volume

15. Which one of the following descriptions of its specific law is false?
Law of Definite Proportions – The elements in a compound are always present in the same proportion by mass.
Boyle’s Law – Volume decreases as pressure increases
Law of Conservation of Mass – Total mass of reactants and products are always equal
Periodic Law – Elements in a specific period will go increasingly heavier to the right

16. What is the best thing a person could eat to regulate their metabolism?
Something high in magnesium ions
Something high in iron ions
Something high in potassium ions
Something high in iodide ions

17. Which of the following statements regarding limiting reagents is false?
The quantity of a yielded product depends on the quantity of the limiting reagent
A small quantity of the excess reagent is left after the limiting reagent is fully consumed
A balanced chemical equation can be used to determine the limiting reagent
The reactant with the lowest initial mass is the limiting reagent

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