Chemical Reactions

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 

Exothermic reactions...

• Absorb energy
• Release energy
• Release Color
• Absorb Color

What is essential for a combustion reaction to begin?

• Carbon dioxide
• Fuel 
• Fuel, oxygen and heat
• Water and oxygen

Ice melting

• Chemical Change
• Physical Change

What happens in ALL chemical changes?

• Change in state of matter
• A new substance is formed
• Bubbles are produced
• An explosion

Water can dissolve many things so it is called the .....

• wonderful water
• cohesion
• liquid
• universal solvent

The thing that does the dissolving

• Solute
• Solvent
• Colloid
• Solution

What is a solute?

• The substance that does the dissolving in a solution.
• The substance that is dissolved into the solution.
• The mixing of different substances.
• The process in which neutral molecules lose or gain electrons

Hydrocarbon is made of what two elements?

• Carbon monoxide

• Hydrogen

• Carbon

• Oxygen

• Calx