Keywords: solids, liquids, gases, balancing equations, relative formula mass.

Keywords: acids and bases, soluble salts, titrations, balancing equations, investigation.

Keywords: safety, states of matter, balancing equations.

Keywords: atoms, atomic number, isotopes, ions, electronic structure, dot and cross diagram.

Keywords: mixtures, substances, separation, melting points.

Keywords: exothermic reactions, bond energies.

Keywords: calculating moles, limiting reactant.

Keywords: periodic table, mendeleev.

Keywords: electrolysis, copper sulfate solution, anode, cathode, half-equation.

Keywords: bonding, bonding properties.

Keywords: avogadro constant, calculating mass.