Classifying Matter Pretest

A substance made up of two or more chemically combined elements is ___.

• a compound

• an element

• a mixture

• a solution

A substance that cannot be broken down into any other substance by ordinary chemical means is called ___.

• an element

• a molecule

• a compound

• a mixture

Two or more physically combined substances form ___.

• a mixture

• an element

• a compound

• an acid

What is an example of a compound?

• Table salt

• Air

• Oxygen

• Salt water

Tags

NGSS.MS-PS1-1

A pure substance that is made of more than one element is a ___.

• compound

• mixture

• suspension

• blend

Which of the following is an element?

• helium

• salt

• methane

• bronze

Which of the following is a compound?

• carbon dioxide

• sulfur

• blood

• air

Tags

NGSS.MS-PS1-1

Which of the following is a mixture?

• dirt

• rust

• methane

• oxygen

A mixture is uniform within the substance, evenly mixed, and cannot be distinguished visibly. This mixture is called ___.

• homogeneous

• substance

• compound

• heterogeneous

Because zinc can combine with other substances but cannot be changed into a simpler substance by an ordinary chemical process, zinc is classified as ___.

• an element

• an acid

• a mixture

• a compound