Conservation of Matter

6. What type of state change is occurring when water is boiled until it becomes water vapor?

• Solid to gas
• Solid to liquid
• Liquid to solid
• Liquid to gas

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

7. What type of change is occurring when candle wax melts?

• Chemical change; solid to liquid
• Chemical change; liquid to solid
• Physical change; solid to liquid
• Physical change; liquid to solid

Tags

NGSS.MS-PS1-4

8. Aiden got one scoop of ice cream from the tub in his freezer. The combined weight of his bowl and ice cream was 7 ounces. He left the ice cream outside on a hot day and returned to find melted ice cream. What can you predict the combined weight of the bowl and melted ice cream will be, in ounces?

(a)  

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-4

9. Ellie placed an ice cube directly onto her kitchen scale. The scale read 10 grams. Then, she placed the ice cube in a bowl and left it to melt in the kitchen. The next morning, she placed the bowl with the melted ice cube in it on the scale. The scale read 14 ounces. Which statement explains why the weight was different the next day?

• Heat caused the weight of ice cube to increase.
• The weight of the bowl affected the experiment.
• Physical changes result in a change in weight.
• The ice cube changed from a solid to a liquid.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

10. The 5th graders at Redwood Elementary School conducted an experiment where they weighed a chocolate bar, then allowed it to melt outside on a hot day and weighed it again. Which graph represents the likely results of the experiment?

• 
• 
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Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-2

What is matter?

• A. a form that matter can exist in (solid, liquid, gas)

• B. an irreversible change that creates a new substance

• C. anything that takes up space and has weight

• D. maintained; stayed the same

• E. a reversible change that does not create a new substance

What is a state (of matter)?

• A. a form that matter can exist in (solid, liquid, gas)

• B. an irreversible change that creates a new substance

• C. anything that takes up space and has weight

• D. maintained; stayed the same

• E. a reversible change that does not create a new substance

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What does conserved mean?

• A. a form that matter can exist in (solid, liquid, gas)

• B. an irreversible change that creates a new substance

• C. anything that takes up space and has weight

• D. maintained; stayed the same

• E. a reversible change that does not create a new substance

Tags

NGSS.MS-PS1-5

What is a physical change?

• A. a form that matter can exist in (solid, liquid, gas)

• B. an irreversible change that creates a new substance

• C. anything that takes up space and has weight

• D. maintained; stayed the same

• E. a reversible change that does not create a new substance

What is a chemical change?

• A. a form that matter can exist in (solid, liquid, gas)

• B. an irreversible change that creates a new substance

• C. anything that takes up space and has weight

• D. maintained; stayed the same

• E. a reversible change that does not create a new substance

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2