Chemical Changes

A chemical change produces ______ new substances.

• zero

• one or more

• one

Tags

NGSS.MS-PS1-2

Which of these is NOT evidence of a chemical change?

• Change in shape

• Change in color

• A new smell

• Release of heat

Tags

NGSS.MS-PS1-2

Which of these is evidence of a chemical change?

• Change in temperature

• Change in physical state

• Gas bubbles

Tags

NGSS.MS-PS1-2

True or False?

Mass changes after a chemical change has occurred.

• True

• False

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the law that states that in any chemical or physical change, the total mass of the matter does not change?

• Chemical change

• Law of matter

• Conservation of matter

• Change of matter

Tags

NGSS.MS-PS1-5

When one or more substances change into one or more new substances, you observe a _____________.

• Physical reaction

• Chemical reaction

• Chemical change

• Physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of these is an example of a chemical change?

Select all that apply.

• Cooking/Baking

• Cutting

• Mixing

• Rust

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of these is NOT an example of chemical change?

• Fireworks

• Cracking an egg

• Cooking an egg

• Burning wood

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

True or False?

A chemical change can be undone.

• True

• False

Is spoiling food a physical or chemical change?

• Physical Change

• Chemical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5