Unit 2 Day 9 Thursday October 12th.

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Presentation transcript:

Unit 2 Day 9 Thursday October 12th

Phases of Matter Drill Rewrite sentences and fill in the blanks: When a _______ is cooled to its freezing point, it changes into a __________. When a _______ is warmed to its melting point, it changes into a _______. For a specific kind of matter, the freezing point and the melting point occur at the same ________. WORD BANK: SOLID, LIQUID, TEMPERATURE

Solid is heated past melting point, it becomes a liquid Liquid is cooled to freezing point, it becomes a solid

Melting Point = Freezing Point Temperatures Different for various types of matter: Specific Type of matter MP = FP (at sea level = 1 atmosphere) Oxygen -218.79 °C = -361.82 °F Water 0˚C = 32˚F Mercury -38˚C = -36.4 ˚F Lead 621˚C = 1,149.8 ˚F

gas is cooled past condensation point, becomes a liquid Liquid is heated past boiling point, it becomes a gas

Boiling Point = Condensation Point Temperatures Different for various types of matter: Type of matter Boiling point temperatures (at sea level = 1 atmosphere) Oxygen -183 °C = -297 °F Water 100˚C = 212˚F Mercury 357˚C = 674˚F Lead 1749˚C = 3180˚F

Matter at the Chemistry Scale Mixtures - homogenous - heterogeneous Pure Substances - Compounds  molecule is smallest or - Elements  atom is smallest

Mixing different phases of matter Solid with Liquid: - Homogenous: salt and water - Heterogeneous: sand and water Solid with gas: - Homogenous: orange flame - Heterogeneous: plastic bag blowing in the wind Liquid with gas: Homogenous: mist Heterogeneous: spittle!

Mixing same phases of matter Liquid with Liquid Homogenous: vinegar with water Heterogeneous: oil and water Solid with solid Homogenous: sugar and salt Heterogeneous: salt crystal Gas with gas Homogenous: all mixtures of gases!

Soda Pop lab Separating a mixture of liquid and solid by using their different boiling points. This is called DISTILLATION!