Units 1-3 Review Physical Science

Subatomic particles with a negative charge

• Electrons

• Neutrons

• Protons

• Quarks

Subatomic particles with a positive charge

• neutrons
• atomic mass
• protons
• isotopes

Measure mainly of the nuclear particles: protons + neutrons

• Subatomic Particles
• Atomic Number
• Atomic Mass
• Gluons

Value representing the number of protons in an element

• Atomic Mass
• Mass Number
• Valence Electrons
• Atomic Number

Subatomic particles that are neutral in charge

• Neutrons
• Protons
• Nucleus 
• Electrons

A tiny but very dense, positively charged portion of the atom that holds most of the atomic mass

• Electron Shells
• Orbitals
• Electron Cloud
• Nucleus

How many protons and electrons does this element have?

• 35

• 18

• 17

• 52

How many neutrons does Chlorine have?

• 18

• 17

• 35

• 52

How many neutrons does calcium have?

• 20

• 40

• 60

• 0

What number indicates the nucleus?

• 1
• 2
• 3
• 4