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Density

Supplemental packet page 15. Density. A. The density of a substance is the ratio of mass to volume (grams per milliliters). B. Density is a characteristic property of a material and does not depend on sample size; an example of an intensive property, a property independent of mass

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Density

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  1. Supplemental packet page 15 Density • A. The density of a substance is the ratio of mass to volume (grams per milliliters). • B. Density is a characteristic property of a material and does not depend on sample size; an example of an intensive property, a property independent of mass • C. Density is temperature dependant.

  2. 2000mL 1500mL 1000mL D = __________ = 378.84 g 380.mL Measuring an Object’s Density 1760. mL 1380. mL 380. mL 378.84 g 0.997 g/mL 0.99694736 g/mL

  3. These two questions are related mass of object was 374.84 g volume of can and volume of liquid displaced = 380.mL displaced liquid volume = object volume volume of can and volume of liquid displaced = 380.mL mass of water displaced? _________ g H2O Volume to mass conversions require that density be known for a given substance Our final hypothesis regarding why an object floats in a liquid An Adventure in Buoyancy To validate our hypothesis, we must answer the following four questions • An object floats when it overall mass is less than the mass of the volume of liquid it displaces. • What was the object’s mass? • What was the object’s volume? • What volume of liquid was displaced by the object? • What is the mass of the liquid displaced? 380 DH2O = 1g/1mL

  4. memorize this one To roughly convert °F to °C, subtract 32 from °F, then divide by 2. Temperature Conversions • °F = 1.80 (°C) + 32 • °C = (°F - 32) x 0.555 • K = 273 + °C

  5. Complete this table for practice

  6. Conversion Answers

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