Physical or Chemical

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

• change in shape

• melting

• formation of a gas

• dissolving

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

Is burning wood a chemical or physical change?

• chemical

• physical

A change in the size, shape, or state of matter.

• chemical change

• physical change

• electron change

Which of the following is NOT an example of a physical change?

• crumpled paper

• pencil sharpening

• shrunken clothing

• sour milk

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

NGSS.MS-PS3-4

Photosynthesis is an example of a

• physical change
• chemical change

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7

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