Physical and Chemical Changes

Sophia is conducting an experiment to learn which conditions are best for plant growth. Which of the following would NOT help Sophia collect data in her experiment?

• The height of the plant.

• The amount of water she will use.

• The length of light exposure.

• The hypothesis she will construct.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

Match the following

• Solid

• Air

• Gas

• Salt on the table

• Liquid

• Sugar in tea

Which of the following indicate a chemical reaction is occurring?

• Unknown A dissolves into Unknown B

• Unknown A creates fizzing and bubbles when combined with Unknown B

• Unknown A sinks to the bottom when added to Unknown B

• Unknown A floats to the top when added to Unknown B

Tags

NGSS.MS-PS1-2

Frank found a pile of wood near a campsite, and he believed it had been chemically changed. What property did Frank most likely observe to believe this?

• The surface of the wood felt wet

• The color of the wood was black

• The wood had been chewed

• The wood had been chopped

A change in ​size, ​ shape, and ​ (a)   is a ​ (b)   . A ​ (c)   can NOT be ​ (d)   because it results in a new ​ (e)   being formed.

• state of matter
• physical change
• chemical change
• reversed
• substance

Tags

NGSS.MS-PS1-4

Water freezing into ice is an example of a...

• Physical Change

• Chemical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Iron rusting is an example of a...

• Physical Change

• Chemical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Squeezing the juice out of an orange is an example of a...

• Physical Change

• Chemical Change

Milk going sour is an example of a...

• Physical Change

• Chemical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Gatorade powder dissolving in water is an example of a...

• Chemical Change

• Physical Change