Ocr As Chemistry - Formulae Of Ionic Compounds

Front 1

Ions are formed when...

Back 1

...electrons are transferred from one atom to another.

Front 2

The simplest ions are single atoms which have either lost or gained electrons so as to have a...

Back 2

...full outer shell.

Front 3

There are lots of ions that are made up of a group of atoms with an overall charge. What are these called?

Back 3

Molecular ions.

Front 4

State the formula for the following ions.

Back 4

Front 5

Charges in ionic compounds always...

Back 5

...balance out to 0.

Front 6

How are ionic compounds formed and what type of bonding to they use?

Back 6

• Ionic compounds are made when positive and negative ions bond together.
• They bond using ionic bonds.

Front 7

Back 7

Front 8

What is formed when an acid and a base react?

Back 8

They form water and a salt.

Front 9

What is a salt? Describe the structure.

Back 9

• Salts are ionic compounds.
• All solid salts consist of a lattice of positive and negative ions.
• In some salts, water is incorporated in the lattice.

Front 10

What is the name of water in a lattice? What is the name of a solid salt containing water and a solid salt that doesn't?

Back 10

• The water in a lattice is called water of crystallisation.
• A solid salt containing water of crystallisation is hydrated.
• A solid salt containing no water of crystallisation is anhydrous.

Front 11

How is water held inside the lattice in a salt?

Back 11

Due to the lattice and waters polarity, they are able to form bonds due to the opposite charges.

Front 12

.......... mole of a particularly hydrated salt always has the same number of ......... of ............ of ............. .

Back 12

1. one

2. moles

3. water

4. crystallisation

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Back 13