Exploring Ions: Cations and Anions

What defines an element?

• The number of neutrons

• The atomic mass

• The number of protons

• The number of electrons

How many protons does a neutral carbon atom have?

• 8

• 6

• 5

• 7

What happens when a carbon atom has 6 protons and 5 electrons?

• It becomes a neutral atom

• It becomes a boron ion

• It becomes a carbon ion with a +1 charge

• It becomes a carbon ion with a -1 charge

Which element has 5 protons?

• Oxygen

• Nitrogen

• Boron

• Carbon

What is the charge of a boron ion with 5 protons and 6 electrons?

• +1

• +2

• Neutral

• -1

How many protons does platinum have?

• 80

• 74

• 78

• 82

What is the charge of a platinum ion with 78 protons and 74 electrons?

• +2

• +5

• +3

• +4

What is a positive ion called?

• Proton

• Electron

• Cation

• Anion

What is a negative ion called?

• Proton

• Cation

• Electron

• Anion

When do we call an atom an ion?

• When it has an imbalance between protons and electrons

• When it has more protons than neutrons

• When it has more neutrons than protons

• When it has an equal number of protons and electrons