Physical and Chemical Changes

A molecule is made up of 

• two or more atoms
• only one atom
• two or more different atoms
• not made of atoms

Tags

NGSS.MS-PS1-1

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

• change in shape
• melting
• formation of a gas
• dissolving

Tags

NGSS.MS-PS1-2

Is hammering wood together to build a house a chemical or physical change?

• chemical
• physical

Is melting butter for popcorn a chemical or physical change?

• chemical
• physical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Is bleaching your hair a physical or chemical change?

• physical
• chemical

Tags

NGSS.MS-PS1-2

Kim puts an ice cube in a beaker and it melts. This is a good example of:

• a physical change.
• a chemical change.
• an experiment.
• an analysis.

Tags

NGSS.MS-PS1-4

When you break a cracker into pieces it is a 

• Chemical change
• Physical change
• Chemical Weathering
• Physical Weathering

Adding baking soda and vinegar together and it fizzes and creates carbon dioxide.

• Chemical
• Physical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Liv lit a match and said it was a physical change. Is she correct?

• Yes
• No
• Sometimes

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A student asked what she could do to an egg for a chemical change. Her friend answered correctly and said...

• You can drop the egg.
• You can cook the egg.
• You can crack the egg.
• You can paint the egg.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4