Objectives  SWBAT differentiate between classifications of matter.  SWBAT describe and choose appropriate separation techniques.

Substance vs Mixture  Classify the following as a substance or mixture. Chlorine Chlorine Water Water Soil Soil Sugar water Sugar water Oxygen Oxygen Carbon dioxide Carbon dioxide Rocky road ice cream Rocky road ice cream Alcohol Alcohol Pure air Pure air iron iron

Gas assumes the shape and volume of its container particles can move past one another compressible -lots of free space between particles flows easily particles can move past one another Liquid assumes the shape of the part of the container which it occupies particles can move/slide past one another not easily compressible little free space between particles flows easily particles can move/slide past one another Solid retains a fixed volume and shape rigid - particles locked into place not easily compressible little free space between particles does not flow easily rigid - particles cannot move/slide past one another

 Draw a diagram of: a solid and gas in a closed flask, a solid and gas in a closed flask, a liquid and solid in a closed flask, a liquid and solid in a closed flask, a solid, liquid and gas together in a closed flask. a solid, liquid and gas together in a closed flask.

Classification of Matter  Next, you will complete a Classification of Matter graphic organizer.

Matter Has mass and Takes up space Can only be Separated Chemically, uniform and definite composition Can be separated Physically, not definite composition cannot be Separated into Simpler substance Contains two Or more elements Uniform throughout Not uniform throughout

States of Matter Deposition

Physical Separations  Predict how to separate each of the following heterogeneous mixtures: Salt and pepper Salt and pepper Sand and iron filings Sand and iron filings Mud (dirt from the water) Mud (dirt from the water) Fruit salad (the different types of fruit) Fruit salad (the different types of fruit)

Physical Separations (cont’d)  Filtration Filtration  Evaporation Evaporation  Centrifugation Centrifugation  Crystallization Crystallization  Distillation Distillation  Chromatography Chromatography  Decantation Decantation

Distillation

Chemical Separations  Electrolysis  Chemical Reactions  Decomposition

Electrolysis