2.  Sample of matter, either a single element or a single compound, that has a definite chemical & physical properties  Made of only 1 type of particle  Elements or Compounds  Elements – made of atoms  Compounds – made of molecules

3.  A substance that can’t be separated or broken down into simpler substances by chemical means  Pure substance  Can’t be broken down at all  Made of one type of atom  Found listed on Periodic Table

4.  Substance made up of atoms of 2 or more different elements chemically combined with specific mass ratio  Can only be separated by chemical changes  Made only of molecules  H 2 0: Water  NaCl: Salt  C 6 H 12 O 6 : Sugar  Fe 2 O 3 : Rust  Properties of compound are completely different from the properties of elements that formed it

5.  Combination of 2 or more substances that are not chemically combined  2 or more things physically in the same place  Examples: Salad, Cereal, Pizza, Omelette

6.  Looks like or appears to be only 1 substance  Example  Gatorade  Lemonade

7.  Looks like or appears to be more than 1 substance

8.  A homogeneous mixture of 2 or more substances evenly dispersed throughout a single phase  Looks like one thing  Usually when 1 substance is dissolved in another, but not always  Examples: Lemonade, Air, Bronze, Gatorade

9.  Ability of 1 substance to dissolve in another  To dissolve more quickly: Crush it, Stir it, Heat it  Solute – the substance that is dissolved  Solvent – what substance is being dissolved in  Example: Sugar dissolves in water

10.  A mixture in which particles of a material are more or less evenly dispersed throughout a liquid or gas  When you shake it, it looks like one thing, but if you leave it setting, particles will settle to bottom  Example: Snow Globe

11.  Mixture consisting of tiny particles that are intermediate in size between those in solutions and those in suspensions  Particles aren’t so small that they completely dissolve like solutions, but aren’t so big they settle  These particles can scatter light  Example: Milk, Mayo, Deodorant