Lesson 8 Review

In an endothermic reaction, energy is _________.

• absorbed

• released

_____ reactions usually feel hot!

• endothermic

• exothermic

____ reactions usually feel cold.

• endothermic

• exothermic

Endo means in or _______.

• absorbed

• released

Exo means out or ________.

• absorbed

• released

What instrument would you use to detect an endothermic or exothermic reaction?

• triple beam balance

• ruler

• thermometer

When a candle is lit hydrocarbons are combusting. An exothermic reaction is occuring. Energy is being _________________ .

• absorbed

• frozen

• destroyed

• released

'Have you ever eaten sherbet sweets? 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

If a chemical reaction is EXOTHERMIC, the temperature would....

• Stay the same
• Increase
• Decrease

HCl reacts with Zn giving off heat

• endothermic
• exothermic