Generation Genius Chemical vs Physical Changes

If two substances are mixed and a new substance is formed, what type of change is it?

• Chemical Change

• Physical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

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

• gallium

• iron

• steel

• aluminum

Tags

NGSS.MS-PS1-4

When a substance changes states (melts, evaporates, etc) it is what type of change?

• Physical Change

• Chemical Change

Tags

NGSS.MS-PS1-4

When something burns, it is a..

• Chemical Change

• Physical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

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?

• The match started to glow brighter

• The match went out

• The match made a POP sound

• Nothing happened

Tags

NGSS.MS-PS1-2

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

• Fill up a balloon

• Flame test

• Measure temperature

• Look at it

Tags

NGSS.MS-PS1-2

How does Hydrogen react in a flame test?

• Match glows brighter

• Match goes out

• Makes a POP sound

• Nothing happens

Milk spoiling is an example of which type of change?

• Physical change

• Chemical change

Tags

NGSS.MS-PS1-2

What type of change is mixing air into egg whites to make frosting?

• Chemical change

• Physical change