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**Size Independent Physical Properties**

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**The following do not depend on the amount of matter present:**

Melting Point & Boiling Point Density: the mass per unit volume of a substance. Conductivity: ability to carry electricity Solubility: ability of one substance to dissolve in another

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Think Pair Share If you change the amount of water in the pan, do you change the boiling point? Explain. If I have a 3 cm block of copper or a 3 m block of copper, does the conductivity change? Explain.

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Solving for Density Density = Mass Volume mass density volume

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**What is the density of an object with a mass of 16 grams and a volume of 25 mL?**

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**What is the volume of a cup of water with a mass of 350 grams, if the density of water is 1 g/mL?**

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**What is the mass of an object with a density of 2 g/mL and a volume of 358 mL?**

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**What is the volume of a cup of water with a mass of 350 grams, if the density of water is 1 g/mL?**

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**What is the density of an object with a mass of 450 grams and a volume of 150 mL?**

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**What is the mass of an object with a density of 4 g/mL and a volume of 50 mL?**

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Think Pair Share Explain how to use the density pyramid to solve density problems. What has more mass, a pound of feathers or a pound of gold? Explain your reasoning.

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Learning Scale 4 - Design an experiment to determine the identity of an unknown using its physical properties. 3 - Classify and compare substances based on their physical properties. 2 - Calculate and describe the densities of various materials through the measurement of their masses and volumes. 1 - Explain the difference between mass, weight, and volume.

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