__________ is anything that takes up space.

• Volume

• Chocolate ice cream

• Matter

• Weight

Answer explanation

Matter is anything that takes up space.

What is the smallest unit of matter?

• molecule

• atom

• particle

• nucleus

Answer explanation

The atom is the smallest unit of matter.

A(n) ___________ is a pure substance made of only one type of atom.

• Compound

• Element

• Atom

• Mixture

Answer explanation

An element is made of only one type of atom.

Center of an atom is called

• core

• positive

• electron

• nucleus

Answer explanation

Electron has a

• positive charge +

• no charge

• negative charge -

Answer explanation

Electrons are negative.

A proton has a

• positive charge +

• no charge

• negative charge -

Answer explanation

When two or more atoms are combined together, they are called...

• a particle

• a double atom

• a molecule

• a bacteria

Answer explanation

A molecule is made when two or more atoms combine.

Elements are listed on the

• Table of Materials

• Periodic Table of Atoms

• Periodic Table of Elements

Answer explanation

The Periodic Table is where you can find a list of the elements.

What is the symbol for potassium?

Answer explanation

Click on all the states of matter.

• air

• gases

• plasma

• liquids

• solid

Answer explanation