Endothermic/Exothermic Reactions

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 exothermic reaction, heat is ...

• taken in or absorbed
• given out or released

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

In endothermic reactions...

• Energy is taken in or absorbed

• Energy is given out or released

• Atoms do not rearrange

• Energy stays the same

Exothermic reactions...

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

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-4

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

• Endothermic processes
• Exothermic processess
• None of these 

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

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

• Stay the same
• Increase
• Decrease

Tags

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

When you freeze water, it turns to ice.  What kind of change is this?

•  Physical
• Chemical

Tags

NGSS.MS-PS1-4

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 reaction is releasing energy.

• It is an endothermic reaction

• It is an exothermic reaction

• Two of the answers are correct

After you mix two substances together, a new substance forms.  This is an example of:
 

•  Physical Change
•  Chemical Change

Tags

NGSS.MS-PS1-2