U1S3 ionic bonding

Question 1

What is an ion

Answer 1

• an atom that has lost or gained an electron
• has a negative or positive charge

Question 2

What holds ions together in an ionic bond

Answer 2

• electrostatic forces of attraction between oppositely charged ions

Question 3

What is an ionic crystal

Answer 3

• giant ionic lattice

Question 4

Electrical conductivity of ionic compounds

Answer 4

• conduct when molten or dissolved
• ions free to move through and carry a charge

Question 5

Melting point of ionic compound

Answer 5

• high
• ionic lattices held by strong electrostatic forces of attraction

Question 6

Solubility of ionic compounds

Answer 6

• dissolve in water
• water molecules are polar so attract ions away from lattice