Atmosphere- The gases that surround the earth, made up of Nitrogen, oxygen, argon and CO2
Lithosphere- The outer layer of the earth (land) that consists of metals, oxygen and silicon
Hydrosphere- The liquid layer of the earth consisting of mostly water and some dissolved substances
Electrolysis- A method used to extract metals from their ores. Breaks down electrolytes with an electric current. The positive ions go to the negative electrode and vice versa.
Metals- Strong substances that have high melting and boiling points.
Covalent bonding- Sharing electrons between atoms to give them a full outer shell. It is caused by the electrostatic attraction between the positive nuclei and the negative electrons.
Solid ionic compounds- Form crystals due to the negative and positive ions creating a giant lattice. Ionic compounds have high melting and boiling points too. They also conduct electricity…