Matter Has Mass and Takes Up Space

Mixture Varying composition Varying composition Not Chemically Combined Not Chemically Combined Retain properties of original substance Retain properties of original substance Separate by physical means Separate by physical means

Mixture Homogeneous Uniform throughout Examples: ice tea ice tea stainless steel stainless steel brass brass jar of peanuts jar of peanuts gold jewelry gold jewelry

Homogeneous Solutions Solution Mixture in which particles are so small they cannot be seen and will not settle to the bottom of their container. Examples: ice tea ice tea Windex Windex Kool-Aid Kool-Aid Coca Cola Coca Cola vinegar vinegar

Mixture Heterogeneous Not Uniform throughout Not Uniform throughoutExamples: trail mix trail mix concrete concrete dirt dirt wood wood milk milk

Heterogeneous Colloids and Suspensions Colloid Mixture in which a beam of light can be seen as it passes through Examples:FogMilkgelatinSuspension Liquid heterogeneous mixture in which visible particles settle Liquid heterogeneous mixture in which visible particles settleExamples: muddy water muddy water Pepto Bismol Pepto Bismol chocolate in milk chocolate in milk

Pure Substance Constant composition Chemically Combined Separated by chemical means

Pure Substances Elements – made of one type of atom

Pure Substance Compounds – fixed proportion of 2 or more elements

Physical Properties can be observed without changing the composition of the substance

Physical Property & Means of Separation viscosity (fluidity) ex. syrup v. water use decanting to separate viscosity (fluidity) ex. syrup v. water use decanting to separate

Physical Property & Means of Separation conductivity ex. metal v. plastic use electric charge to separate

Physical Property & Means of Separation density – ex. bowling ball v. basket ball use decanting & chromatography to separate

Physical Property & Means of Separation solubility – ex. sugar v. pepper use dissolving & evaporation to separate solubility – ex. sugar v. pepper use dissolving & evaporation to separate

Physical Property & Means of Separation magnetism – ex. iron v. wood use magnetic separation to separate

Physical Property & Means of Separation melting/ boiling point ex. water v. copper use distillation to separate melting/ boiling point ex. water v. copper use distillation to separate

Physical Property & Means of Separation particle size – ex. Sand v. boulders use filtering or screening to separate particle size – ex. Sand v. boulders use filtering or screening to separate

Chemical Property If a substance will or will not undergo a change that will alter the composition of the original substance.

Chemical Properties Combustibility/Flammability how easily a substance will burn

Chemical Property Oxidation - Combines with Oxygen ex. Iron rusting

Chemical Property Corrode - to deteriorate due to the action of water, air, or an acid

Chemical Property Decomposition – a compound broken into its elements ex. Hydrogen peroxide to water & hydrogen

Chemical Properties React with Acids ex. Copper with nitric acid

Chemical Property Non-reactive ex. Gold, noble gases