Unit 3 Atoms & Elements Review

99.9% of the atom's mass is located in the

• electrons

• nucleus

• protons

• neutrons

Carbon atomic number is 6. This means that an carbon atom must have

• 6 electrons

• 6 protons

• 6 electrons and protons

• 6 neutrons

What number indicates an electron?

• 1

• 2

• 3

• 4

An atom with atomic number 6 would have how many protons?

• 6

• 12

• 3

• cannot be determined 

Which two particles make up the nucleus of an atom?

• Protons and Electrons

• Protons and Neutrons

• Molecules and Compounds

• Neutrons and Electrons

What is at the center of every atom?

• An electron

• A compound

• A molecule

• A nucleus

This particle determines which element it is.

• Protons

• Neutrons

• Electrons

• Mrs. Wagner

Neutrons have a ____________ charge.

• Neutral, or no charge

• Positive

• Negative

• Neutron? I don't know what that is!

Which charge does a proton have?

• Neutral

• Negative

• No charge- battery is dead

• Positive

Where are electrons found?

• Outside the nucleus

• Under my bed

• Inside the nucleus

• Inside a proton