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