Atoms and Molecules

An element cannot be chemically broken down into a simpler substance.

• True
• False

A proton has a(n) ___ charge.

• positive
• negative
• neutral
• unpredictable

A neutron has a(n) ___ charge.

• positive
• negative
• neutral
• unpredictable

An electron has a(n) ___ charge.

• positive
• negative
• neutral
• unpredictable

Where are protons found in an atom?

• chemical symbol
• nucleus
• cloud
• with electrons

Where are neutrons found in an atom?

• chemical symbol
• nucleus
• cloud
• with electrons

Where are electrons found in an atom?

• chemical symbol
• nucleus
• cloud
• with protons

What tells us the number of protons in an atom?

• nucleus number
• mass number
• atomic number
• neutron number

What tells us the number of protons plus the number of neutrons in an atom?

• nucleus number
• mass number
• atomic number
• neutron number

The number of protons is the same as the number of neutrons.

• True
• False