Matter has mass takes up space

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Presentation transcript:

Matter has mass takes up space Everything in the universe is matter or energy. Matter atoms molecules cells solid liquid gas air Energy heat light sound X-rays UV rays infrared UV

States of Matter SOLID LIQUID GAS vibrates flows expands apart

Properties of Matter Physical Properties: Chemical Properties: observed without changing into new substance. temp., state, mp, bp, color, mass, volume, etc. Chemical Properties: only be observed when changed into new substance. flammability, corrosiveness, reactivity, etc.

Properties of Matter Copper (Cu) Physical Chemical ??? ???

Properties of Metals & Nonmetals (sodium, iron, copper, zinc) Nonmetals (sulfur, oxygen, neon, carbon) _________ Properties: Luster (shiny) Malleable (sheets) Ductile (wires) Good Conductors (heat/electricity) Brittle Poor Conductors Physical Metalloids

Heterogeneous Mixture chromatography distillation Matter (boiling) separate physically cannot separate physically Pure Substance Mixture separate chemically cannot separate differences or unevenly mixed uniform or evenly mixed filtering Classification of Matter (flowchart handout) Sugar and Water make Lemonade Sugar and Water and Fat make Milk Sugar and Salt and Water and Fat and Iron and Oxygen make Blood Heterogeneous Mixture Homogeneous Mixture Compound Element salt, baking soda, water, sugar oxygen, iron, hydrogen, gold (solutions) NaCl NaHCO3 H2O C12H22O11 O2 Fe H2 Au

Pure Substances Element: -only one type of atom -simplest form of matter retaining its properties (cannot be separated) (chemically or physically) Examples: Carbon (C) Helium (He) Gold (Au)

Pure Substances Compound: different elements chemically bonded together (can be separated… chemically) Examples: Carbon Dioxide (CO2) Water (H2O) Salt (NaCl) Sucrose (C12H22O11)

completely new substance with completely new properties NaCl (compound) Na (element) Sodium is a highly reactive metal stored in oil. Cl2 (element) Chlorine kills organisms in pools. It’s also a poisonous green gas.

O2 H2O H2 Compound: can be separated… chemically into… elements …which can… NOT. O2 (gas) H2O (liquid) H2 (gas) Hoffman apparatus

Mixtures physically separated by _____________. (Solution) Homogeneous Mixture: physically mixed evenly… it looks the same throughout distillation (boiling) Examples: Copper (Cu) and Zinc (Zn) make brass. Lemonade (H2O + C12H22O11) Steel (Fe + C + Cr)

Mixtures Heterogeneous Mixture: physically mixed unevenly… can see the different parts Examples: Sand Granite Wood

Separation (Group Discussion) Sand + Iron (Fe) + Salt (NaCl) is a(n) ______________________ that can be separated by … heterogeneous mixture Physically: -pulling out Fe with magnet Physically: -dissolving NaCl in water -filtering sand out -evaporating the water Give students 3 min discuss in small groups how this mixture might be separated. Give 3 min to share. Then reveal. Chemically: -decomposing NaCl with electricity into Na and Cl

Quick Quiz! 1. Which properties can be observed only by changing the composition of a substance? all properties of a substance intensive properties chemical properties physical properties Same substance

Quick Quiz. Passing an electric current through a substance produces oxygen and sulfur. This substance cannot be a(n) compound. mixture. element. solution.

Quick Quiz. 2. Which of the following is a mixture? sodium chloride (NaCl) carbon dioxide (CO2) sucrose (sugar, C12H22O11) air (N2, O2, CO2, H2, Ar, …)

Quick Quiz. + A blue-green solid is decomposed by heating. A colorless gas and a black solid appear. The blue-green solid must have been a(n) heterogeneous mixture homogeneous mixture compound element

______geneous Mixture distillation (boiling) Matter ________ separate physically separate physically _____ Substance _______ separate chemically cannot separate _________ _______ filtering Classification of Matter (flowchart handout) Sugar and Water make Lemonade Sugar and Water and Fat make Milk Sugar and Salt and Water and Fat and Iron and Oxygen make Blood ______geneous Mixture _____geneous Mixture __________ ________ salt, baking soda, sugar, water oxygen, iron, hydrogen, gold (uneven, differences) (________) NaCl NaHCO3 H2O C12H22O11 O2 Fe H2 Au