PS.Chem 5 Flashcard Review

Front

What is an exothermic reaction?

Back

A reaction that releases energy in the form of heat.

Front

What happens to particles when they are heated?

Back

They move faster.

Front

What effect does increased concentration have on reaction rate?

Back

It increases the reaction rate.

Front

What is the relationship between collisions and reaction rate?

Back

More collisions correspond to a faster reaction rate.

Front

What happens to equilibrium when a reactant is removed?

Back

The equilibrium shifts to the left.

Front

Define endothermic reaction.

Back

A reaction that absorbs energy from its surroundings.

Front

What is the role of temperature in chemical reactions?

Back

Higher temperatures generally increase reaction rates.

Front

What is an inhibitor in a chemical reaction?

Back

A substance that decreases the reaction rate.

Front

How does surface area affect reaction rates?

Back

Increased surface area increases the reaction rate.

Front

What is chemical equilibrium?

Back

A state where the rates of the forward and reverse reactions are equal.