C1.1 ATOMS

atoms are tiny particles which make up all substances

- all atoms are made up of a central nucleus with electrons orbitting it

substances made up of only one type of atom are called elements

substances that are made up of different atoms chemically bonded together are called compounds

a mixture is different atoms not chemically bonded together

a molecule is 2 or more atoms from the same/ different elements that are chemically joined

atoms can be either metals…