Mixture - Combination of substances not chemically bonded, Solution - Homogeneous mixture of solute and solvent., Filtration - Method for separating solids from liquids, Evaporation - Process where liquid changes to gas., Compound - Substance made of two or more elements chemically combined., Element - Pure substance made of only one type of atom., Isotope - Atoms of the same element with different numbers of neutrons., Electron - Negatively charged particle in an atom., Proton - Positively charged particle in an atom’s nucleus., Neutron - Neutral particle found in the nucleus of an atom., Symbol - One- or two-letter abbreviation for an element., Formula - Chemical representation showing elements and their ratios, Covalent - Bond formed when atoms share electrons., Ionic - Bond formed when electrons are transferred between atoms., Empirical - Formula showing simplest whole-number ratio of atoms, Molecular - Formula showing actual number of atoms in a molecule., Atom - Smallest particle of an element that retains its properties., Polyatomic - Ion made of two or more atoms covalently bonded., Mass - Amount of matter in an object, Volume - Amount of space an object occupies., Homogeneous - Mixture with uniform composition throughout., Heterogeneous - Mixture with visibly different parts., Melting - Change from solid to liquid state., Freezing - Change from liquid to solid state., Sublimation - Change from solid to gas without becoming liquid.,

CHEM 1_LESSON 1 to 9

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