Physical Science Final Review

Which of the following are pure substances?

• solutions

• compounds

• homogeneous mixtures

• colloids

A substance that is made up of only one kind of atom is a(an)

• compound.

• homogeneous mixture.

• element.

• solution.

If an unknown substance CANNOT be broken down into simpler substances, it is

• a compound.

• an element.

• made of one kind of atom.

• both b and c

What is the symbol for aluminum?

• AL

• Al

• Au

• A

The symbol for gold is

• Au.

• Al.

• Gl.

• Go.

If a material contains three elements joined in a fixed proportion, it is a(an)

• mixture.

• solution.

• atom.

• compound.

Water is a compound because it

• can be broken down into simpler substances.

• always has two hydrogen atoms for each oxygen atom.

• is made of water atoms joined together.

• both a and b

Tags

NGSS.MS-PS1-1

Which of the following is a mixture?

• carbon dioxide

• silicon

• silicon dioxide

• sand

Which of the following is a characteristic of a mixture?

• has varying properties

• has a fixed composition

• contains only pure substances

• both a and b

A mixture that appears to contain only one substance is a(an)

• homogeneous mixture.

• heterogeneous mixture.

• compound.

• element.