Chemistry-chemical reactions

True or false?

A chemical reaction is a chemical change that occurs when two or more substances combine to form a new substance.

• True

• False

True or false?

A chemical reaction is a chemical change that occurs when two substances combine to form a new substance.

• True

• False

True or false?

A chemical rate of reaction is the measure of how long the chemical reaction will take place

• True

• False

True or false?

A chemical rate of reaction is the measurement of the change in concentration of reactants or products in a given period of time.

• True

• False

True or False?

A chemical rate of reaction is the measurement of the change in the reactants or products in a given period of time.

• True

• False

True or false?

Concentration is the number of moles per cubic decimetre.

• True

• False

True or false?

Increasing concentration increases frequency of collision.

• False

• True

What is refereed to as surface area?

• space that a particle exposes for a chemical reaction to occur.

• space in a particle that a particle exposes for a chemical reaction to occur

True / False?

Frequent collision increases the rate of reaction.

• True

• False

True / False?

Frequent collision reduces the rate of reaction.

• True

• False