Elements, Compounds, and Mixtures Quiz

Which is a substance that is made up of only one type of atom?

-compound

-element

-solution

-mixture

element

An emerald can be described as

-a pure substance because it is a compound.

-a pure substance because it is an element.

-an impure substance because it is chemically combined.

-an impure substance because it is a mixture.

a pure substance because it is a compound.

Which cannot be separated into simpler substances?

-compound

-element

-solution

-mixture

element

Which method would be best for separating the components of a mixture that is made from two different liquids?

-distillation

-evaporation

-filtration

-sorting

distillation

Which is a characteristic of mixtures?

-They are chemically bonded together.

-They can be classified as pure substances.

-They have fixed ratios between their components.

-They can be separated by physical processes.

They can be separated by physical processes.

A teacher makes the following statement:

"Gasoline boils at a relatively low temperature (about 150°C). The kerosene is removed at around 200°C, followed by diesel oil at 300°C and fuel oil at around 370°C."

What topic is the teacher most likely talking about?

-distillation of a mixture

-filtration of a pure substance

-evaporation of a mixture

-sorting of a pure substance

distillation of a mixture

The table describes how some substances were formed.

Based on the given descriptions, which substance is most likely a mixture?

-P

-Q

-R

-S

R

What can a drop of liquid mercury be described as?

-a pure substance and a compound

-an impure substance that is reactive

-an impure substance that is unreactive

-a pure substance and an element

a pure substance and an element

Which best describes a compound such as sodium chloride?

-a pure substance that can be separated into different elements by physical means

-a mixture of two common substances that can be separated by chemical means

-a mixture of two common elements that can be separated by physical means

-a pure substance that can be separated into different elements by chemical means

a pure substance that can be separated into different elements by chemical means

Which best describes an element?

-a pure substance

-a type of a mixture

-a pure compound

-an impure substance

a pure substance