Generation Genius Chemical v Physical Changes

When two substances are mixed and a new substance it formed, this is called a _____ change.

Tags

NGSS.MS-PS1-2

Placing the spoon in hot water was a physical change since the melted metal was still…

• gallium

• iron

• steel

• aluminum

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

When a substance changes states (melts, evaporates, etc.) it is often a type of ______ change.

Tags

NGSS.MS-PS1-4

When something burns, it is a ____ .

• physical change

• chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

True or false: since gas is detected during the candy + soda demo, it is an example of a chemical change.

• true

• false

Tags

NGSS.MS-PS1-2

What is the evidence that the gas made in the mentos + soda demo was carbon dioxide?

• There was an explosion.

• The candles went out.

• Soap went all over the table.

• You could read the secret message.

Tags

NGSS.MS-PS1-2

Which of these is the most reliable way to see if a new gas has formed?

• put a balloon on a scale

• flame test

• measure temperature

• smell it

Tags

NGSS.MS-PS1-2

Milk spoiling is an example of which type of change?

• physical change

• chemical change

• both

• neither

Tags

NGSS.MS-PS1-2