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Published byErnest Armstrong Modified over 8 years ago
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DENSITY
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Factors affecting density Temperature- as temperature increases density decreases. Pressure- as pressure increases density increases. Size – if you cut an item in half density stays the same.
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Float or Sink Anything with a density less than one will float in water. If there are numbers to the left of the decimal it will sink!
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Gold is very dense - it feels very heavy for its size. D = 19.3g/cm 3
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Plastic is not very dense - it feels light for its size. P = 1g/cm 3
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THE EQUATION D =M V
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THE TRICK
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Cover up the one you want to solve for!
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Let’s solve for VOLUME. “M over D” is remaining so we divide!
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Let’s solve for Density. “M over V” is remaining so we divide!
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Let’s solve for Mass. “D next to V” is remaining so we multiply!
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Solving for density: mass or density volume volume/ mass Examples: water:100ml100g= glass: 1ml 4g= 1g/ml 4g/ml
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Water Molecule
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Liquid Water
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Ice molecule
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