8th Grade 3.2 Chemical Reactions Test Review

Energy is required to break chemical bonds.

• True

• False

Tags

NGSS.HS-PS1-4

Mass is sometimes lost during a chemical reaction.

• True

• False

Tags

NGSS.HS-PS1-7

Biological catalysts are called products.

• True

• False

Products have different properties compared to reactants.

• True

• False

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Increasing the temperature generally decreases the reaction rate.

• True

• False

Tags

NGSS.HS-PS1-5

To increase the reaction rate, you should increase the concentration of the reaction in the rate-determining (slow) step.

• True

• False

Tags

NGSS.HS-PS1-5

A new substance that is formed following a chemical reaction is

• catalyst

• activation energy

• product

• inhibitor

Tags

NGSS.HS-PS1-6

A reaction that occurs when a substance reacts with oxygen is

• endothermic reaction

• combustion reaction

• exothermic reaction

• reactant

Tags

NGSS.HS-PS1-4

A substance that is present before a chemical reaction that then undergoes changes during a chemical reaction is

• reactant

• catalyst

• product

• inhibitor

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A chemical reaction that releases heat is

• endothermic reaction

• combustion reaction

• reactant

• exothermic reaction

Tags

NGSS.HS-PS1-4