Physical and Chemical Changes #2 DL 20-21

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

• Exothermic
• Endothermic

Tags

NGSS.HS-PS1-4

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

• Stay the same
• Increase
• Decrease

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

In an endothermic reaction, heat is...

• absorbed (taken in)

• released (given out)

Tags

NGSS.HS-PS1-4

Is the combustion (burning) of gasoline endothermic or exothermic?

• Endothermic

• Exothermic

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A student mixed two chemicals to allow them to react. The temperature before the reaction was 25 ° C. The temperature after the reaction was 18° C. Which of the following is true? 

• The temperature changed 
• It is an endothermic reaction
• It is an exothermic reaction 
• Two of the answers are correct 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-4

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

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-4

In an exothermic reaction, heat is ...

• taken in or absorbed
• given out or released

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What type of reaction occurs in a hand warmer

• exothermic
• endothermic

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-6

NGSS.MS-PS3-4

In an endothermic reaction, heat is ...

• taken in or absorbed
• given out or released 

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Is photosynthesis an exothermic or endothermic reaction?

• Endothermic
• Exothermic
• Neither

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3