Lesson Check: Energy Changes in Chemical Reactions

The substances present BEFORE a reaction occurs are called______.

• Products

• Exponents

• Factors

• Reactants

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the substance present at the END of a reaction called?

• Product

• Exponent

• Integer

• Reactant

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How do you know baking a cake is a chemical reaction?

• It tastes yummy.

• A new substance is formed.

• You mixed it together.

• It has ingredients.

Tags

NGSS.MS-LS1-7

NGSS.MS-PS1-2

In EXOTHERMIC reactions, energy is _____ from the reaction to the surroundings.

• Absorbed

• Released

• Eliminated

• Evaporated

Tags

NGSS.MS-PS1-4

In ENDOTHERMIC reactions, energy is _____ by the reaction system from the surroundings.

• Absorbed

• Released

• Eliminated

• Obliterated

Tags

NGSS.MS-PS1-4

What usually happens to TEMPERATURE in an ENDOthermic reaction?

• Increases

• Decreases

• Stays the same

Tags

NGSS.MS-PS1-4

Temperature usually _____ in EXOthermic reactions.

• Stays the same

• Increases

• Decreases

Tags

NGSS.HS-PS1-4

NGSS.HS-PS1-5

Photosynthesis is an _____ reaction.

• EXOthermic

• ENDOthermic

Tags

NGSS.MS-LS1-6

Cooking and baking are _____ reactions.

• EXOthermic

• ENDOthermic

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Fireworks are an _____ reaction.

• EXOthermic

• ENDOthermic

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4