Exo or Endo

In an exothermic reaction, heat is ...

• taken in or absorbed
• given out or released

In an endothermic reaction, heat is ...

• taken in or absorbed
• given out or released 

Baking bread and cooking an egg are examples of....?

• Endothermic processes
• Exothermic processess
• None of these 

Is the combustion of gasoline endothermic or exothermic?

• Endothermic
• Exothermic

Freezing of ice

• Endothermic

• Exothermic

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

When barium hydroxide and ammonium chloride react, the temperature of the mixture decreases. What kind of reaction is this?

• Endothermic

• Decomposition

• Exothermic

• Indothermic

When calcium reacts with water, the temperature changes from 18°C to 39°C. Which statement is correct?

• The solution at the end is acidic

• The reaction is reversible

• The reaction is exothermic

• The reaction is endothermic