Reactions: Physical/chemical and Exothermic/Endothermic

In an exothermic reaction, heat is ...

• taken in or absorbed
• given out or released

Tags

NGSS.MS-PS1-4

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

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

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

•  Physical
• Chemical

Tags

NGSS.MS-PS1-4

Sugar dissolves in water.  This is an example of....

• Physical Change
• Chemical Change

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

•  Physical Change
•  Chemical Change

Tags

NGSS.MS-PS1-2

_____ reactions usually feel hot!

• endothermic

• exothermic

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What instrument would you use to detect an endothermic or exothermic reaction?

• a mass balance

• ruler

• thermometer

• a pH meter

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following is a sign that a chemical reaction has occurred?

• change in shape
• melting
• bubbles of gas appear
• dissolving

Tags

NGSS.MS-PS1-2