ACA - Stoichiometry Test Review

Define the following word: stoichiometry

• Study of quantities of a chemical reaction.

• Study of chemical bonding.

• Study of chemical kinetics.

• Study of chemical equilibrium.

Define the following word: representative particles - Atoms, molecules, formula units.

• representative particles - Atoms, molecules, formula units.

• representative particles - Electrons, protons, neutrons.

• representative particles - Cells, tissues, organs.

• representative particles - Solids, liquids, gases.

Define the following word: Law of Conservation of Mass

• Mass is not created or destroyed.

• Mass can be created from energy.

• Mass can be destroyed under certain conditions.

• Mass is always constant in a closed system.

Define the following word: limiting reagent

• The ingredient that will limit the amount of product made.

• The ingredient that is always in excess.

• The ingredient that speeds up the reaction.

• The ingredient that has no effect on the reaction.

Define the following word: excess reagent

• The ingredient that does not get used up (left over).

• The ingredient that is completely used up in a reaction.

• The product formed in a chemical reaction.

• The catalyst used to speed up a reaction.

Define the following word: theoretical yield

• The maximum amount of product that can be made.

• The actual amount of product obtained from a reaction.

• The amount of reactants used in a reaction.

• The efficiency of a chemical reaction.

Define the following word: actual yield

• The amount of product actually made in the experiment.

• The theoretical amount of product expected.

• The amount of reactants used in the experiment.

• The percentage of product obtained compared to the theoretical yield.

Define the following word: percent yield - % yield = (Actual/Theoretical) x 100.

• percent yield

• percent error

• percent composition

• percent difference

What is always conserved in a chemical reaction?

• Mass (Law of Conservation of Mass).

• Energy

• Volume

• Number of molecules

What else could be conserved in a chemical reaction?

• Moles, Liters, atoms, molecules.

• Energy, Mass, Charge, Volume.

• Temperature, Pressure, Concentration, Density.

• Color, Odor, Taste, Texture.