What is a compound?
A substance made of two or more elements that have reacted together or that are chemically bonded together.
A unit of currency that supports Communism.
Which electrons in an atom are involved in bonding?
The inner-shell electrons
The outer-shell electrons
What happens to the electrons when ionic bonds are formed?
They are transferred - non-metal atoms gain them, and metal atoms lose them.
They are shared between the atoms.
What happens to electrons in atoms when covalent bonds are formed?
They are delocalised
They are shared between atoms
Why do the elements in Group 1 form ions with a single positive charge?
Because they gain an outer-shell electron
Because they lose an outer-shell electron
Elements in Group 7 form ions with a single negative charge. This is because they gain an outer-shell electron.
