1.1 Matter

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    Matter - Anything that has mass and occcupies space

    States (or Phases) of Matter - solid, liquid gas

       Solids – have definite shape and volume

       Liquids – have definite volume but not shape

       Gases – no definite shape nor volume

    Elements - a substance that can't be broken down into a simpler substance (Na, Si, H2, S8)

    Diatomics - H2, N2, O2, F2, Cl2, Br2, I2

    Compounds - a substance composed of more than one element (CO2, NaCl, NaHCO3)

    Pure Substances - Any single element OR any single compound

    Mixtures - More than one substance (element AND/OR compound)

    Homogeneous Mixture - A mixture with uniform composition throughout

    Heterogeneous Mixtures - A mixture lacking uniform composition

    Chemical Property/Change

    Chemical change – a change that involves the conversion of at least one substance into a different substance

    Physical Property/Change

    Physical change – a change in which no substances are converted into different substances

    Intensive Property - A property independent of sample size

    Extensive Property - A property dependent upon sample size