Energy Changes and Chemical Reactions

Forming a chemical bond __________

• absorbs energy from the surroundings

• releases energy into the surroundings

• creates energy that did not previously exist

• uses up energy that then no longer exists

Tags

NGSS.HS-PS1-4

A chemical bond __________energy when it breaks.

• increases

• decreases

• absorbs

• releases

Tags

NGSS.HS-PS1-4

Energy is _________ when bonds form.

• released

• absorbed

• destroyed

• created

Tags

NGSS.HS-PS1-4

Energy is _________ when bonds break.

• absorbed

• created

• destoryed

• released

Tags

NGSS.HS-PS1-4

Energy is needed to break bonds in chemical reactions.

• True

• False

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

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

• temperature (hot or cold)

• texture

• color

• smell/odor

Tags

NGSS.HS-PS1-4

NGSS.HS-PS1-5

If you have a cold compress used by an athlete, what is the energy doing?

• being absored

• being released

• nothing happens

• it is being destroyed

Tags

NGSS.HS-PS3-4

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-PS1-2

NGSS.MS-PS1-5

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

• Absorbed

• Released

• Eliminated

• Obliterated

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4