Flashcards and display cards for word banks with meanings evident. Key terms in KS3 and KS4 Chemistry. Flashcards can be printed back to back and used in individual learning, or shared paired learning. They can be printed out separately and used to play “snap” or “pairs”, or simply to match the word with its meaning, or reduced in size in copying to make a cut and stick activity. Key terms include atom, molecule, element, compound, ion, mixture and others related to particles.