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Understanding Density and Its Determination Methods

Learn about density and how to determine it through mass and volume ratios. Explore how temperature affects density and why it is an intensive property not influenced by sample size. Practice ranking materials based on density measurements with helpful simulations.

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Understanding Density and Its Determination Methods

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  1. 3.4 Determining Density • Density is the ratio of the mass of an object to its volume.

  2. 3.4 Determining Density • Each of these 10-g samples has a different volume because the densities vary.

  3. 3.4 Determining Density • Density is an intensive property that depends only on the composition of a substance, not on the size of the sample.

  4. Intensive property is a property that depends on the type of matter in a sample, not the amount of matter.

  5. Determining Density • Simulation 1 • Rank materials according to their densities.

  6. 3.4 Density and Temperature • Experiments show that the volume of most substances increases as the temperature increases. Meanwhile, the mass remains the same. Thus, the density must change. • The density of a substance generally decreases as its temperature increases.

  7. 3.10

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  10. for Sample Problem 3.10

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  14. for Sample Problem 3.11

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