Atoms, Elements, Compounds

Water is made up of hydrogen and oxygen, two elements that were chemically combined. This makes water a(n)

• atom

• compound

• element

• mixture

Tags

NGSS.MS-PS1-1

__ is a pure substance containing two or more kinds of atoms.

• Element

• compound

• mixture

• solution

An element is a ___ that cannot be separated into simpler substances by physical or chemical means.

• pure substance

• mixture

• solution

• compound

Which of the diagrams below represent a mixture?

• A

• B

• C

• D

How many different types of atoms are there in the following molecule?

• 7

• 6

• 3

• 8

Tags

NGSS.MS-PS1-1

How are elements and compounds different?

• A compound is represented by a chemical formula, and elements are represented by a chemical symbol.

• Compounds are represented by chemical symbols of one letter, and elements are represented by symbols of two letters.

• Elements are pure substances, and compounds are not.

• Elements are always larger units of matter, and compounds are smaller.

How many elements are in the compound Fe₂O₃?

• 0

• 1

• 2

• 3

Tags

NGSS.MS-PS1-1

Hydrogen is considered an element, while hydrogen peroxide is considered a compound. This is because hydrogen peroxide is...

• is used for cleaning wounds.

• made of two different elements.

• is a liquid.

• useful to human beings.

Tags

NGSS.MS-PS1-1

The smallest particle of matter

• Element

• Compound

• Atom

• Chemical

• Element

• Compound

Tags

NGSS.MS-PS1-1