Unit 1 Module 2 Lesson 3 Energy Changes

Endothermic reactions__________-

• release more energy than they absorb

• absorb more energy than they release

• release and absorb exactly the same amount of energy

• can either release more energy than they absorb or absorb more energy than they release, depending on the reaction

Tags

NGSS.HS-PS1-4

Forming a chemical bond

• absorbs energy from its surroundings

• releases energy into the surroundings

• creates energy that did not previously exist

• uses up energy that no longer exists

Tags

NGSS.HS-PS1-4

A chemical bond absorbs energy when it breaks.

• True

• False

Tags

NGSS.HS-PS1-4

Energy is needed to break bonds in chemical reactions

• True

• False

Tags

NGSS.HS-PS1-4

For an endothermic reaction to continue, energy must be _________ added.

• thermally

• quickly

• constantly

• chemically

Tags

NGSS.HS-PS1-4

A chemical bond _______________ energy when it breaks.

• destroys

• releases

• Creates

• Absorbs

Tags

NGSS.HS-PS1-4

A chemical reaction in which more energy is absorbed than is released is endothermic.

• True

• False

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

A change in __________ is a sign of energy being used in a chemical reaction.

• Odor

• Color

• Temperature

• Texture

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NGSS.HS-PS1-5

NGSS.HS-PS3-4

Law that states that energy is always transferring, but energy is not created or destroyed.

• Exothermic Reaction

• Law of Conservation of Energy

• Chemical Potential Energy

• Endothermic Reaction

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NGSS.HS-PS3-1

NGSS.HS-PS3-2

More energy is released when the products form that is required to break the bonds in the reactants.

• Exothermic Reaction

• Law of Conservation of Energy

• Chemical Potential Energy

• Endothermic Reaction

Tags

NGSS.HS-PS1-4