Ions & Chemical formulae

What is an ion?

• A Charged Atom
• A Large Atom
• A Small Atom
• A Cute Atom

Why are ions formed?

• To make our lives difficult
• Because atoms want 8 valence electrons
• Because atoms have the same number of protons and electrons
• Because atoms gained neutrons

An atom becomes _________ when it gains electrons.

• Positive
• Negative
• Neutral
• Invinsible

Which particles change the charge in atoms when ions are formed?

• Protons
• Electrons
• Neutrons
• Kittens

What is the ionic symbol for a phosphorus atom?

• P^-3
• P⁺³
• P^-2
• P⁺²

Ionic bonds form between two ions that have

• negative charges

• positive charges

• opposite charges

What is the charge of an atom that has lost one electron?

• -1
• -2
• +1
• +2

This is called a __________ .

• Positive Ion

• Negative Ion

• Neutron

This is called a ____________ .

• Neutron

• Electron

• Negative Ion

• Positive Ion

The name for the ionic compound NaF is

• Sodium fluoride

• Nappium fluoride

• Sodium fluorine

• Fluorine sodiumide