Catalysts — Unit test Answers

0 verified answers

Free Preview

Which reaction is exothermic?

a reaction that absorbs energy from the environment

a reaction that requires an activation energy

a reaction that releases energy into the environment

a reaction that does not involve a change in energy

Free Preview

Which component is affected when a catalyst is added to a chemical reaction?

the amount of substrate

the activation energy

the amount of product

the concentration of reactants

Which statement describes how enzymes and substrates are related?

The enzyme influences the speed of change from substrate to product.

Enzymes are released as substrates in a chemical reaction.

An enzyme is a special kind of substrate in a chemical reaction.

Substrates combine with enzymes to form reactants.

How does a catalyst influence a chemical reaction?

It speeds up or slows down a chemical reaction by direct participation.

It reacts with products to increase the concentration of reactants.

It decreases the amount of energy necessary for the reaction to proceed.

It increases the total amount of products formed.

Did you find these answers helpful?

More from this Course