Atoms and Molecules

Two or more atoms chemically bonded together are called a

• atom
• element
• molecule
• mixture

What is the basic unit of matter and is the smallest particle of an element?

• Atoms
• Elements
• Compounds
• Molecules

What is an element?

• Two or more atoms joined together.

• One of over 100 types of atoms

• Two or more different elements joined together.

• A particle with no charge found in the nucleus of an atom.

Explain the difference between an atom and a molecule.

• One molecule is made of one atom.
• One molecule is always made of different particles.
• One molecule is made of more than one atom.
• One molecule is made of more than two atoms.

Which of the models below represent a molecule? 

• A
• B
• C
• D

Which of the models below represent an atom? 

• A
• B
• C
• D

Molecule or Not?  CaCO

• molecule
• not a molecule

Molecule or Not?  CO

• molecule
• not a molecule

Is H an element or a molecule?

• element

• molecule

Is NO₂ an element or a molecule?

• element

• molecule