What is an atom?

• A type of fruit
• The building blocks of matter

• A measurement of time
• A type of clothing

What happens when you put two atoms together?

• They explode.

• They turn into a gas.

• They disappear.

• They form a molecule.

What is it called when two different elements join together?

• compound
• molecule

• isolation
• combine

What is the charge of a proton?

• Negative
• Neutral
• Positive
• Variable

What is the charge of a neutron?

• Negative

• Positive

• Neutral

• Variable

What is the charge of an electron?

• Positive

• Negative

• Neutral

• Variable

What is the Periodic Table?

• A list of famous scientists
• A arrangement of the chemical elements

• A recipe for making periodic elements
• A map of the solar system

What makes up the atomic number?

• Atomic mass
• Number of electrons
• Number of protons
• Number of neutrons

What makes up the atomic mass?

• Protons and neutrons added together

• Neutrons and electrons added together

• Protons and electrons added together

• Electrons and protons added together

True or False: When a element has two letters in it, it has two atoms.

• False
• True