Atoms & Molecules Unit Review

This man created the Periodic Table of Elements.

• Albert Einstein

• Bill Gates

• Thomas Edison

• Dmitri Mendeleev

All matter is made up of

• atoms

• elements

• mixtures

• molecules

Water is a ___________ state of matter.

• solid

• liquid

• gas

• plasma

Carbon dioxide is a ___________ state of matter.

• gas

• solid

• liquid

• plasma

Elements on the periodic table are arranged by

• the atomic weight

• the atomic number

• alphabetically

• number of letters in element name

In the center of the atom, you will find the

• molecule

• mixture

• electrons

• nucleus

H is the chemical symbol for

• helium

• hydrogen

• home run

• salt

Elements are

• one proton, one electron, and one neutron.

• one atom

• different kinds atoms

• made up of more than one kind of atom bonded together.

The amount of matter in an object is

• mass

• volume

• density

• weight

When a gas becomes a liquid, _____________ occurs.

• sublimation

• condensation

• melting

• evaporation