Physical and Chemical Changes Review

Is burning sugar a...

• Chemical Reaction

• Physical Reaction

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

NGSS.MS-PS1-4

Ripping cardboard is an example of

• Physical Change

• Chemical Change

Baking a cake is an example of

• Physical Change (Just changed phases)

• Chemical Change (can't change it back)

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How do you know a chemical reaction takes place?

• Something new is made

• Changes Color

• Changes Temp

• Bubbles or Steams

• ALL of the ABOVE

Tags

NGSS.MS-PS1-2

When you change from solid to liquid it is called..

• Freezing

• Melting

• Evaporation

• Condensation

Tags

NGSS.MS-PS1-4

What happens as a solid starts to melt? Select all that apply

• Bonds vibrate and start to pull apart

• Bonds vibrate and pull together

• Temp increases and so does kinetic energy

• Temp decreases and so does kinetic energy

Tags

NGSS.MS-PS1-4

What is the difference between HO and He?

• HO what santa says while delivering presents

• No difference

• HO is two elements because both are caps and He is one element since it is lower case

• They are both two atoms

Tags

NGSS.MS-PS1-1

Is NaCl an element or compound?

• Element

• Compound

• Both

Tags

NGSS.MS-PS1-1

A chemical change is different than a physical change because in a chemical change...

• Chemicals are used

• A new substance is formed and in a physical change no new substance is formed

• Molecules do not physically touch

• The change can be seen but in a physical change it cannot

Tags

NGSS.MS-PS1-2

One clue of a chemical change is the formation of a precipitate. A precipitate is formed when...

• Two liquids react and a gas is produced

• A solid dissolves in a liquid

• One liquid dissolves in another

• Two liquids react and a solid is formed

Tags

NGSS.MS-PS1-2