Chemical vocabulary 1Online version IGCSE basic vocab 1 by Michele Gaddy 1 States of Matter 2 Changes of state 3 Temperatures for changes of state 4 when you smell perfume 5 ways to describe things that have mass and volume 6 words to use when describing mixtures or compounds solid liquid gas melting freezing sublimation evaporation melting point freezing point volatile odor matter pure substance pure substances impurities