What is the best way to make a dull penny shiny?

• Wash it with soap

• Dip it in vinegar & salt

• Spit on it

• Dip it in salt water

Which change is a chemical reaction?

• One kind of matter changes into another kind of matter with different properties

• One kind of matter changes phases

• One kind of matter keeps its identity & properties

• One kind of matter changes its shape & volume

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following describes what happens during a chemical reaction.

• Matter is destroyed

• Matter is not changed

• Matter is created & destroyed

• Matter is neither created nor destroyed

Tags

NGSS.MS-PS1-5

What happens to particles in water as you heat the water in a pan?

• The particles expand

• The particles move faster

• The particles move closer together

• The particles break apart into separate atoms

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which is an example of a chemical change?

• Cutting your hair

• Putting on make-up

• Folding towels

• Rust forming

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Are explosions always dangerous?

• Yes

• No

Are explosions always used to destroy things?

• Yes

• No

Explosions are caused when gas is produced.

• Yes

• No

Matter is made up of particles too small to be seen.

• Yes

• No

Tags

NGSS.MS-PS1-1

Which of these is not made using a chemical reaction?

• fireworks

• rubber

• oxygen

• silly putty

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5