Mr. Garcia Chemistry QTR 4 review

What is a substance called if it speeds up a chemical reaction?

• reusable
• catalyst
• specific
• fragile

Tags

NGSS.HS-PS1-5

In an exothermic reaction, heat is ...

• taken in
• given out

Tags

NGSS.HS-PS1-4

In an endothermic reaction, heat is ,,,

• taken in
• given out

Tags

NGSS.HS-PS1-4

What type of reaction occurs in a hand warmer

• exothermic
• endothermic

Tags

NGSS.HS-PS1-4

What is a Chemical Reaction?

• When two liquids hit each other
• When a liquid has foam
• When two substances mix and have a reaction
• When a reaction forms with soda and candy

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

• Stay the same
• Increase
• Decrease

Tags

NGSS.HS-PS1-4

When iron nails get rusty, heat is released.  What process is this?

• Exothermic
• Endothermic

Tags

NGSS.HS-PS1-4

In an endothermic reaction the system is releasing energy.

• True
• False

Tags

NGSS.HS-PS1-4

Is the combustion of gasoline endothermic or exothermic?

• Endothermic
• Exothermic

Tags

NGSS.HS-PS1-4

What is true of this reaction?

• Equal amounts of energy were released and absorbed
• The reaction released more energy than it absorbed
• The reaction absorbed more energy than it released

Tags

NGSS.HS-PS1-4