Bio Ch 2.1 - 2.3 Review

The four most common elements in living organisms are

• C, H, O, Fe.

• C, H, O, Na.

• C, H, O, N.

• C, N, O, Na.

All matter is composed of elements.

• True

• False

Tags

NGSS.MS-PS1-1

All life is composed of matter.

• True

• False

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

All matter exists in the form of compounds.

• True

• False

All matter has mass.

• True

• False

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Which element is a trace element in the human body?

• nitrogen

• zinc

• hydrogen

• oxygen

A compound contains two or more different elements in a fixed ratio.

• true

• false

Tags

NGSS.MS-PS1-1

A compound is always a solution.

• true

• false

Sodium is an example of a compound.

• true

• false

A compound is always a pure element.

• true

• false