Chemical Reactions (no balancing)

Which statement is true regarding endothermic reactions?

• a) Temperature change is positive and enthalpy change is positive
• b) Temperature change is positive and enthalpy change is negative
• c) Temperature change is negative and enthalpy change is positive
• d) Temperature change is negative and enthalpy change is negative

What type of reaction occurs in a hand warmer

• exothermic
• endothermic

In an endothermic reaction, heat is ...

• taken in or absorbed
• given out or released 

Have you ever eaten sherbet sweets candy? They fizz in your mouth and your tongue feels cold. Why do you think that is?

• It is an exothermic reaction
• It is an endothermic reaction
• It is made of ice
• It is dissolving your mouth

_____ reactions usually feel hot!

• endothermic

• exothermic

____ reactions usually feel cold.

• endothermic

• exothermic

Endothermic or exothermic reaction: Evaporation of water

• Endothermic

• Exothermic

Endothermic or exothermic reaction: Fireworks

• Endothermic

• Exothermic

What type of chemical reaction absorbs energy and requires energy for the reaction to occur?

• Endothermic

• Exotermic

• Exothermic

• Endotermic

When a new substance forms as a result of a chemical reaction, what type of change has occurred?

• Chemical Change

• Physical Change