Pure Substances Vs. Mixtures

1.

Multiple Select

2 mins

1 pt

[check all that apply] Pure substances include:

Elements

Homogeneous Mixtures

Compounds

Heterogeneous Mixtures

2.

Multiple Choice

2 mins

1 pt

An element is?

Chemically combined

Pure substances that can be broken down

Pure substances that cannot be broken down into simpler substances

One or more elements chemically combined.

3.

Multiple Select

2 mins

1 pt

[check all that apply] An compound is?

Chemically combined

Pure substances that can be broken down

Pure substances that cannot be broken down into simpler substances

One or more elements chemically combined.

4.

Multiple Choice

2 mins

1 pt

The properties of a compound are different from the elements that make them up.

True

False

5.

Multiple Choice

2 mins

1 pt

Oxygen is a

Element

Compound

6.

Multiple Choice

2 mins

1 pt

Water (H₂O) is a

Element

Compound

7.

Multiple Select

2 mins

1 pt

[check all that apply] Mixtures are

chemically combined

composed of two or more types of matter that can be present in varying amounts

One or more elements chemically combined

can be separated by physical changes

8.

Multiple Choice

2 mins

1 pt

Salt (NaCl) is

Mixture

Compound

9.

Multiple Choice

2 mins

1 pt

Saltwater is

Mixture

Compound

10.

Multiple Choice

2 mins

1 pt

Heterogeneous mixture is

A mixture with a composition that varies from point to point

A mixture with a uniform composition and appears visually the same throughout

11.

Multiple Choice

2 mins

1 pt

Homogeneous mixture is

A mixture with a composition that varies from point to point

A mixture with a uniform composition and appears visually the same throughout

12.

Multiple Choice

2 mins

1 pt

Chicken noodle soup is

Homogeneous mixture

Heterogeneous mixture

13.

Multiple Choice

2 mins

1 pt

Vinegar is

Homogeneous mixture

Heterogeneous mixture

14.

Multiple Choice

2 mins

1 pt

In a mixture, which of the following is always true?

It is a liquid.

It contains dissolved solids.

It is composed of two or more pure substances.

It cannot be separated into individual components.

15.

Multiple Choice

2 mins

1 pt

A bottle of dishwashing detergent contains a clear, viscous liquid. The label has a long list of ingredients, including water, sodium lauryl sulfate, fragrance, and Blue dye #5.

What can you infer about the material in the bottle from this label and the appearance of the liquid?

It is a pure substance.

It is a compound.

It is a heterogeneous mixture.

It is a homogeneous mixture.

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