CHEMISTRY SEMESTER 2 FINAL REVIEW

A balanced chemical equation allows one to determine the

• mole ratio of any two substances in the reaction.

• energy released in the reaction.

• electron configuration of all elements in the reaction.

• mechanism involved in the reaction.

The coefficients in a chemical equation represent the

• masses, in grams, of all reactants and products.

• relative numbers of moles of reactants and products.

• number of atoms in each compound in a reaction.

• number of valence electrons involved in the reaction.

Actual yield must be determined by

• experiments

• calculations

• theoretical yield

• estimation

• 3

• 4

• 6

• 8

• 10:6

• 3:4

• 2:3

• 4:3

The participation of reactants in a chemical reaction is restricted by the

• limiting reactant

• limiting product

• excess reactant

• excess product

The kinetic-molecular theory assumes that the distance between the particles of a gas is so large that there are no significant attractive or repulsive forces.

• True

• False

 Gases tend to have lower densities than solids because gases have lower molar masses.

• True

• False

If the temperature of this substance is held constant at 130°C while the pressure is 

changed from 1.4 atm to 0.8 atm, which is the change in state that will occur?

• vaporization

• condensation

• deposition

• melting

Which is the triple point of this substance?

• 88° C, 0.95 atm

• 110° C, 1.00 atm

• 150° C, 1.45 atm

• 36° C, 2.1 atm