PS - Unit 2 Chapter 2

Which subatomic particle has a positive charge?

• proton

• neutron

• electron

• midichlorian

Which subatomic particle has a negative charge?

• proton

• neutron

• electron

• cybertron

What is the center of an atom called?

• The protoneucleon

• The centrometer

• The protneutron

• The nucleus

The nucleus of an atom contains which subatomic particles?

• protons and electrons

• protons and neutrons

• electrons and neutrons

• protons, electrons, and neutrons

Typically in a neutral atom, which two subatomic particles are equal in number?

• protons and neutrons

• all subatomic particles are equal in number

• neutrons and electrons

• protons and electrons

What is the average atomic mass of Neon?

• 10

• 20.18

• 20

• 30.18

How many electrons does a neutral Copper atom have?

• 63

• 29

• 92

• 34

How many electrons does a neutral Hydrogen atom have?

• 1

• 2

• 3

• 0

How many electrons does a neutral atom of Krypton have?

• 36

• 83.80

• 48

• 119.80

What is the atomic number for an element with 41 neutrons and a mass number of 80?

• 39
• 41
• 80
• 121