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PROPERTIES OF MATTER: PHYSICAL & CHEMICAL

PROPERTIES OF MATTER: PHYSICAL & CHEMICAL. Physical Properties. PROPERTY – ABILITY TO DO SOMETHING TYPES OF PHYSICAL PROPERTIES – * INTENSIVE – DO NOT DEPEND ON AMOUNT OF MATTER * EXTENSIVE – DEPEND ON AMOUNT OF MATTER. INTENSIVE -.

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PROPERTIES OF MATTER: PHYSICAL & CHEMICAL

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  1. PROPERTIES OF MATTER: PHYSICAL & CHEMICAL

  2. Physical Properties PROPERTY – ABILITY TO DO SOMETHING TYPES OF PHYSICAL PROPERTIES – * INTENSIVE – DO NOT DEPEND ON AMOUNT OF MATTER * EXTENSIVE – DEPEND ON AMOUNT OF MATTER

  3. INTENSIVE - TEXTURE, COLOR, ODOR, LUSTER (SHINY), MALLEABILITY (BEATEN INTO SHEETS), DUCTILITY (DRAWN INTO WIRES), CONDUCTIVITY (ALLOW ENERGY TO ELECTRICITY TO FLOW), HARDNESS (SCRATCHING), SOLUBILITY (DISSOLVE), MELTING/FREEZING/BOILING POINT, & DENSITY

  4. COPPER ORE – COPPER – COPPER WIRE SHEEP WOOL – REMOVED WOOL – DYED WOOL

  5. EXTENSIVE - MASS, WEIGHT, VOLUME, & LENGTH

  6. DENSITY – AMOUNT OF MATTER IN A GIVEN SPACE TOOLS – TRIPLE BEAM BALANCE, RULER OR GRADUATED CYLINDER UNITS – GRAMS PER CUBIC CENTIMETER (g/cm3) FORMULA – DENSITY = MASS/VOLUME D = M/V HOW TO FIND DENSITY – 1. MASS OUT OBJECT 2. FIND VOLUME OF OBJECT (l x w x h, displacement, or liquid in graduated cylinder) 3. CALCULATE – MASS DIVIDED BY VOLUME

  7. PRACTICE http://www.explorelearning.com/index.cfm?method=cResource.dspView&ResourceID=362

  8. CHEMICAL PROPERTIES *Reactivity with other chemicals *Toxicity (Damage to Organism) *Flammability *Combustion *Oxidation states (rust/tarnish) *Chemical stability *Types of chemical bonds that will form

  9. Physical vs. Chemical Change • Changing from one state to another is a • Physical Change. • If a new substance is formed it is a • Chemical Change. Images are from http://www.chem4kids.com

  10. SIGNS OF PHYSICAL CHANGE • CHANGED IS BASED ONLY ON PHYSICAL APPEARANCE • YOU CAN GET THE ORIGINAL SUBSTANCE BACK • STATE OF MATTER CHANGES • SIGNS OF CHEMICAL CHANGE • ODOR PRODUCED • CHANGE IN TEMPERATURE • COLOR CHANGE • BUBBLES FORMED • SOLID FORMED • SUBSTANCE DISAPPEARS

  11. Chemical Reactions

  12. D. Sublimation - solid gains energy to form a gas (skips liquid stage) i. particles break away immediately to from gas Example - dry ice used for cooling things with a gas

  13. E. Condensation - gas loses energy to form a liquid i. particles get close enough to form liquid Example - gas around a cool glass of water loses energy/cools to form liquid on the glass

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