Endo or Exo?

As an ice cube melts, it absorbs heat. This is a an ____________ process.

• Endothermic

• Exothermic

________________ reactions release heat to their surroundings.

• Exothermic

• Endothermic

The reaction between vinegar and baking soda goes from 25 degrees Celsius to 21 degrees Celsius. This reaction is:

• Endothermic

• Exothermic

Endothermic reactions _________ energy.

• absorb

• release

• expel

• lose

Exothermic reactions _______ energy.

• lose

• gain

• absorb

As water freezes into ice cubes, it releases heat. This is an _________ process.

• Exothermic

• Endothermic

Endothermic reactions feel _______, while exothermic reactions feel ______.

• hot; cold

• cold; hot

In an endothermic reaction, the surroundings:

• lose energy

• gain energy

• stay a constant temperature

In an exothermic reactions, the surroundings:

• Gain energy

• Lose energy

• Stay a constant temperature