Essential Ideas (Chemistry)

Recall cards on the essential ideas of chemistry: chemistry in context (the central science; hypothesis, law, and theory; the macroscopic, microscopic, and symbolic domains); phases and classification of matter (the states of matter and plasma; mass versus weight; conservation of matter; pure substances, elements, compounds, and mixtures; atoms and molecules); physical and chemical properties and changes (extensive versus intensive properties; the NFPA hazard diamond); measurements (SI base units and metric prefixes; volume and density); measurement uncertainty (significant figures, rounding, accuracy versus precision); and the mathematical treatment of measurements (dimensional analysis, conversion factors, and temperature scales).