Atomic Structure

What type of charge does a neutron have?

• positive

• negative

• neutral

• all of them

What type of charge does a proton have?

• positive

• negative

• neutral

• all of them

What charge does an electron have?

• positive

• negative

• neutral

• all of them

What type of ion is formed when an atom loses electrons?

• neutral
• positive
• negative
• either positive or negative

What are ions?

• atoms that are lighter than normal.

• atoms that have a charge

• atoms that have too many neutrons

• atoms with no protons.

The space surrounding the nucleus of an atom contains.

• Protons
• Electrons
• neutrons
• ions

An element with a mass number of 20 with 7 Neutrons has how many protons?

• 20

• 13

• 7

• 0

The atomic number tells you what?

• the average mass of an atom

• number of protons

• number of neutrons

• the charge of an atom

How many electrons does a neutral atom of Si contain? (click to see image)

• 14

• 28

• 7

• 0

Most atoms have no electric charge because they...

• have no electrons

• have neutrons in their nuclei

• have an equal number of electrons and protons

• have an equal number of neutrons and protons