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What is DENSITY??

What is DENSITY??. A Golf Ball is MORE DENSE than a Ping Pong Ball What does this mean?. The ______________ of like atoms or molecules More than just the _____________of a substance, density includes _________________ an object takes up!!

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What is DENSITY??

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  1. What is DENSITY?? A Golf Ball is MORE DENSE than a Ping Pong Ball What does this mean?

  2. The ______________ of like atoms or molecules More than just the _____________of a substance, density includes _________________ an object takes up!! All substances have density including liquids, solids, and gases Density is the measure of the _______________ of a material

  3. DENSITY • Depends on: • Mass: ______________________ • Volume: ___________________________________ FORMULA: __________________ Mass usually expressed in ________ Volume usually expressed in _____or liters, etc.

  4. What would take up more space??? A kilogram of feathers…..or a kilogram of steel?? OR

  5. “Compactness”

  6. LIQUIDS • The more dissolved solids in a solution, the __________________ (such as ocean water) • Cold water in lakes tend to ______ (this creates a constant mixing of water, nutrients, and other substances) Denser layers to less dense layers…..

  7. What would happen???? • Mercury density = 13600kg/m3 • Lead density = 11340kg/m3

  8. Lead floats on liquid mercury!

  9. Solids Ice vs. water…..

  10. SOLIDS • Ice is _____________ than water (which is why lakes and ponds have a thin layer of ice covering in winter, with water underneath) • Various rocks, woods, metals have a characteristic density specific to that substance Wouldn’t you like to have a bunch of THIS dense material?

  11. Factors affecting Density • ____________________ • _____________________

  12. DETERMINING DENSITY • Regular Shapes – mass, then determine the volume by formula EX: cubes, cylinders, spheres, cones, etc. • Irregular shapes – mass, then measure displacement of a liquid (usually water) by that irregularly shaped object

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