Changes and States of Matter

Jennifer left her bike outside, buried in snow. In the spring, when the snow melted, she found her bike covered in rust. Which best describes the change to the bike?

• It was a chemical change, because the bike was a different color.

• It was a chemical change, because the rubber tires were deflated.

• It was a chemical change, because rust can be removed from the metal.

• It was a chemical change, because rust is a new substance on the metal.

Tags

NGSS.MS-PS1-2

Which is the best example of a physical change?

• ice melting

• paper burning

• fireworks exploding

• leaves changing color

Tags

NGSS.MS-PS1-4

Are these examples of a physical or chemical change?

Groups:

(a) Physical Change

,

(b) Chemical Change

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Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A ​ (a)   changes the form or shape of the substance. An example would be ​ (b)   .

A ​ (c)   changes what the substance is. An example would be ​ (d)   .

• boiling water
• burning wood
• chemical change
• physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Match the following pictures of particles to the state of matter they show.

• Particles in a Gas

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• Particles in a Liquid

• 
• Particles in a Solid

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Tags

NGSS.MS-PS1-1

Water can change into any state of matter. ​ (a)   is a solid, but can change to liquid water if​ (b)   . Liquid water can change to​ (c)   the same way. If you want to change this gas back to liquid water, it must be​ (d)   . Liquid water can then be​ (e)   to make a solid.

• Ice
• heated
• water vapor
• cooled
• frozen

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Anika was baking a cake and noticed that the batter turned into a fluffy cake in the oven. If you change a substance into a new substance, what type of change is it? How do you know?

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5