Ch. 7.4 Reaction Rates

Multiple Choice

At higher temperatures, food cooks faster because particles of food

• take up less space.

• increase in number.

• collide more often.

• come into contact with water.

Fill in the Blank

Why are reactions at high temperatures faster than at low temperatures?

Multiple Choice

A slow reaction is likely to occur when the reactants have ____________

temperatures and ____________ surface areas.

• high, small

• low, small

• high, large

• low, large

Multiple Choice

Catalysts that slow reactions are called

• inhibitors

• substrates

• endothermic

• balanced

Fill in the Blank

When you open a soda bottle, what change occurs that allows the dissolved carbon dioxide in the soda to come out of solution?

Multiple Choice

When a chemical reaction and its reverse occur at the same time and rate,

the reaction is said to be in

• equality

• equilibrium

• imbalance.

• redox

Multiple Choice

According to Le Châtelier’s principle, opening a soda can produces bubbles because which of the following changes occurs in the bottle?

• Pressure increases.

• Temperature increases

• Pressure decreases.

• Temperature decreases.