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
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
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
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
Looks like or appears to be only 1 substance Example Gatorade Lemonade
Looks like or appears to be more than 1 substance
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
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
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
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