study guide

significant figures,... adding or subtracting; multiplication; types of elements and their properties...metals, nonmetals, semimetals; measuring tools; Accuracy and precision; physical properties; physical changes; melt/freeze; boil/condense; sublimation; deposition Chemical properties; classification of matter; elements compounds mixtures heterogeneous vs homogeneous separation techniques Essay on classification of matter, separation techniques, measuring vs significant figures; chemical vs physical properties; or a combination