Physical Chemical Change

A chemical change

• changes matter from one form to another.

•  destroys matter.

• creates matter

• does not change matter in any way.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is an example of a chemical change?

• melting solid gold

• burning hydrogen gas

• dissolving sugar in water

• breaking a sheet of glass

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

When water in an open pan is heated for a long time, it becomes...

• a solid

• a vacuum

• a gas

• dew

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NGSS.MS-PS1-4

Which of the following is an example of MELTING?

• stirring some sugar in water until you can't see the sugar

• heating a pan of water until the water is all gone

• heating a block of ice until the ice turns to water

• cooling water in the freezer until the water becomes solid

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Vinegar is an acid that bubble when it interacts with calcite.  Which mineral contains calcite? (Use the table below to answer.)

• limestone

• sandstone

• granite

• gneiss

Tags

NGSS.MS-PS1-2

Mark is observing a burning candle.  He notices that the candle wax makes a pool and dribbles down the side of the candle, where it hardens again.  The wax has undergone:

• a physical change

• a chemical change

• a physical and chemical change

• the formation of a new substance

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A different chemical substance is formed when

• a cloth is cut

• a cup breaks

• a candle burns

• a piece of chalk falls apart

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

David added a little baking soda to a beaker that contained vinegar.  Bubbles started coming from the mixture and a gas was released.  The gas was evidence that:

• the mixture was starting to boil.

• the air in the flask contracted.

• the vinegar and baking soda expanded.

• a chemical reaction took place.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

An example of a liquid turning into a gas is:

• a chocolate bar melting

• steam escaping from a cup of hot chocolate

• an ice cream cone dripping

• a stick of butter getting warm

Tags

NGSS.MS-PS1-4

Water boiling is a _______ change.

• Physical Change

• Chemical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-4