C2-chemistry revision notes
proton numbers, mass numbers and the atomic structure

Mass number- The number of protons and neutrons in a nucleus (added together)

Atomic structure- The structure of the atom
Proton number- The atomic number of a chemical element

Describing ionic bonding

Recognising monomers of polymers

A polymer may be a natural or synthetic macromolecule comprised of repeating units of a smaller molecule (monomers). Polymers are a much larger class of molecules which includes plastics, plus many other materials, such as cellulose, amber, and natural rubber.

Balancing equations

C1- The periodic table

LEARN- types of elements in the periodic table

Facts you should know about the Periodic Table:

Element:
One of a class of substances that cannot be separated into simpler substances by chemical means.

Atom:
All elements are made of atoms. an atom consists of a nucleus, containing protons and neutrons, surrounded by electrons.

C2- Metallic bonding
Metallic bonding is the strong attraction between closely packed positive metal ions and a 'sea' of delocalised electrons.

Ions

Alloys