The Nature of Matter

The Nature of Matter

Multiple Choice

A change in which of these is NOT a physical change?

• Freezing

• Cutting

• Precipitates

• Boiling

Multiple Choice

Which of these is NOT true about mixtures?

• -a blend of two or more kinds of matter, each of which retains its own identity and properties.

• - Parts can mixed together physically and usually can be separated.

• - Contain various amounts of different substances, so the composition needs to be specified. (% Mass = EX: 5 % NaCl and 95 % water)

• - Always has the same composition.

Multiple Select

Which 2 of the following are PURE substances?

• Water (H₂O)

• Air

• Steel

• Copper (Cu)

Multiple Choice

Mixtures can only contain elements.

• True

• False

Open Ended

Explain how we know that seawater is a mixture and not a compound

Multiple Choice

These mixtures are evenly mixed you CAN'T see the different parts.

• Homogeneous mixture

• Heterogeneous Mixture

Multiple Choice

What type of mixture is seawater?

• Homogeneous mixture

• Heterogeneous Mixture

Multiple Choice

What type of mixture is an ice cream sundae?

• Homogeneous mixture

• Heterogeneous Mixture

Open Ended

Write down 3 examples of HOMOGENEOUS mixtures that were not shown in the video.

Open Ended

Write down 3 examples of HETEROGENEOUS mixtures that were not shown in the video.

A useful video to review