When a metal reacts with a non-metal, usually the compound formed has a giant lattice structure with strong ionic bonding, which needs a lot of energy to overcome the large number of bonds.
How does a non-metal form ions?
It loses electrons
It gains protons
It gains electrons
Why do metal ions have a positive charge?
They have more electrons than protons
They have no neutrons
They have more protons than electrons
Sulfur is in group 6 of the periodic table. What charge will a sulfide ion have?
Calcium has an atomic number of 20. It is a metal that forms an ion with +2 charge. How many electrons does a calcium ion have?
Metal and non-metal ions come together to form a giant structure. What is the name of this structure?
What holds the ions together in an ionic solid?
What is the approximate melting point of the ionic compound, sodium chloride?
Why do ionic compounds have high melting points?
It takes a lot of energy to overcome the electrostatic forces
It takes a lot of energy to transfer electrons between the ions
It takes a lot of energy to separate ionic crystals from each other
What happens to the ions when an ionic substance is melted?
They turn back into atoms
They become free to move
They turn into a gas
When can ionic compounds conduct electricity?
In aqueous solution only
When solid and when molten
When molten and in aqueous solution