Matter and Mixtures Pure Substances and Mixtures What

+ Matter and Mixtures Pure Substances and Mixtures

+ What is Matter? Anything that takes up space and has mass (Everything around you!)

+ Scientists classify matter by its composition… n. Matter n. Pure can be classified as: Substance: Elements and compounds n. Mixture: Homogeneous and Heterogeneous

Matter

+ Pure Substance n. Matter with definite physical and chemical properties. n. Elements and Compounds are pure substances.

+ Elements Simplest form of a pure substance Cannot be physically or chemically broken down into anything else (One atom)

+ Compounds Union of two or more elements CAN be broken down chemically (not physically) Has a chemical formula

+ Mixtures Substances that are combined together physically but NOT chemically! There are homogeneous and heterogeneous mixtures

+ Homogenous A mixture that appears to be the same throughout It is “well mixed” The particles are very small and not recognizable

+ Heterogeneous Not evenly mixed Particles can be seen

+ Different types of mixtures… n Solutions: when a substance is dissolved in another n Colloids: particles are mixed together but not dissolved n Alloy: mixture of metals n Suspension: mixture of particles that will eventually settle

Test your + knowledge!!!!! Is it an element, compound, or mixture?

+ element, compound, or mixture? Rocks

+ element, compound, or mixture? Copper

+ element, compound, or mixture? Skittles

+ element, compound, or mixture? Table sugar

+ element, compound, or mixture? Gold

+ element, compound, or mixture? Sweet tea

+ element, compound, or mixture? Salt

+ element, compound, or mixture? Neon gas

+ element, compound, or mixture? Salad

+ element, compound, or mixture? Pure water

+ element, compound, or mixture? Italian dressing

+ element, compound, or mixture? Ranch dressing

+ element, compound, or mixture? FRUIT SALAD!!!!

+ I will assign you a job for making the fruit salad n TEAM FRUIT! n TEAM WHIPPED CREAM! n Cut apples n Pour cream n Cut bananas n Measure sugar n Cut grapes n Measure Vanilla n Cut strawberries n Whip it, whip it good n TEAM SERVE IT! n TEAM EAT! n Put fruit salad into cups n n Serve to class EVERYBODY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! n Om nom nom!