Atomic Structure

What is atomic number?

• Number of protons in an atoms 
• Number of neutrons in an atom
• Mass of an atom
• Charge on an atom

Which subatomic particles are found in the nucleus of an atom?

• Protons and Electrons
• Protons and Neutrons
• Neutrons and Electrons
• Protons, Neutrons and Electrons

What electrical charge does a proton have?

• +1
• 0
• -1
• +2

pure substance that cannot be broken down by ordinary means

• Element

• matter

• Air

• Mixture

What Charge does Electron have?

• - 2

• 0

• + 1

• - 1

If the atoms in an element are Neutral (no charge) what two particles are equal

• Protons and neutrons

• Protons and electrons

• Electrons and neutrons

The rows on the period table are called

• Families

• Groups

• Periods

The vertical column on the periodic table is called

• families

• periods

• groups

The atomic mass is found by

• Electrons + neutrons

• protons + electrons

• protons + neutrons

Where are electrons found?

• orbiting outside the nucleus on the shells

• inside the nucleus