Atomic Structure Atomic Models and Isotopes

The ____ is the central part of an atom.

• neutron

• nucleus

• protons

• isotope

The subatomic particle with a negative charge is the ____.

• proton

• neutron

• nucleus

• electron

The subatomic particle with a positive charge is the ___.

• proton

• neutron

• nucleus

• electron

The subatomic particle that has no charge is the ___.

• proton

• neutron

• nucleus

• electron

Which two subatomic particles have the same mass?

• proton and electron

• proton and neutron

• electron and neutron

• all three have the same mass

If an atom contains 32 protons and 48 neutrons, what is the atomic number of this atom?

• 16

• 32

• 48

• 80

If an atom contains 32 protons and 48 neutrons, what is the mass number of this atom?

• 16

• 32

• 48

• 80

If a neutral atom contains 32 protons and 48 neutrons, how many electrons does this atom have?

• 16

• 32

• 48

• 80

Tags

NGSS.MS-PS1-1

• 14

• 6

• 8

• 20

• 14

• 29

• 43

• 58