Chemical Changes Quiz

What is it called when original substances change into a new substance?

• Physical change

• Chemical change

• Mechanical change

• Electrical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

When vinegar and baking soda are mixed, what kind of change is it?

• Physical Change

• Chemical Change

• No Change

• Class Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What can be an indicator of a chemical change? Check all that apply.

• Odor

• The original substances can be separated

• Unexpected color change

• Change in weight

Tags

NGSS.MS-PS1-2

What happens to heat energy during a chemical change?

• It always increases

• It always decreases

• It can be gained or lost

• It remains the same

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is an example of an unexpected color change?

• Mixing red and blue paint

• Green leaves changing colors

• Adding food coloring to water

• Painting a wall

What is an example of an irreversible change?

• Dissolving salt in water

• Melting ice

• Sour milk

• Tearing paper

What happens to the properties of salt when it dissolves in water?

• They change completely

• They remain the same

• They disappear

• They become acidic

Tags

NGSS.MS-PS1-2

Which of the following is a physical change?

• Burning wood

• Rusting iron

• Melting ice

• Baking a cake

Tags

NGSS.MS-PS1-4

What does it mean when a change is irreversible?

• The original substance can be easily restored

• The change can be undone by cooling

• The original substance cannot be restored

• The change is temporary

What is a closed system?

• A system that allows matter to enter or exit

• A system that does not allow matter to enter or exit

• A system that only allows gases to enter

• A system that only allows liquids to exit