Matter and its Interactions Review

What is a chemical change?

• A change in a substance's chemical make-up.

• A substance mixes with another.

• A substance changes size.

• A change of the substance's state of matter (i.e. melting).

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is a physical change?

• A substance undergoing a chemical reaction.

• Changes in a substance's chemical make-up.

• Changes a substance's physical appearance.

True or False: Slicing an apple is a physical change.

• True

• False

True or False: A change in odor is a chemical change.

• True

• False

Tags

NGSS.MS-PS1-2

Which of the following is NOT an example of a chemical property?

• Rotting

• Density

• Flammability

Which of the following is NOT an example of a physical property?

• Color

• Texture

• Melting Point

• Rate of radioactive decay.

Tags

NGSS.MS-PS1-4

You cook an egg for breakfast. Is this a chemical change?

• Yes, because cooking involves chemical reactions, which changes the chemical properties.

• No, because cooking only changes the physical properties.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

NGSS.MS-PS1-4

After combining hydrogen chloride and sodium hydroxide in solution, you notice a substance formed at the bottom of the beaker. After straining it, you discover it is salt. Explain why this is a chemical reaction.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

List four characteristics that indicate a chemical change.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Burning wood is a

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5