5th Grade Properties of Matter STAAR Review

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What are physical properties of matter?

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Physical properties are characteristics of a substance that can be observed or measured without changing the substance's identity. Examples include color, density, mass, volume, and state (solid, liquid, gas).

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What is a solution?

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A solution is a homogeneous mixture where one substance (the solute) is dissolved in another (the solvent). For example, sugar dissolved in water forms a sugar solution.

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What does it mean for a substance to be soluble?

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A substance is soluble if it can dissolve in a solvent, such as salt or sugar dissolving in water.

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What is density?

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Density is the mass of a substance divided by its volume. It determines whether an object will float or sink in a fluid.

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How do you determine if an object will float or sink in water?

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An object will float if its density is less than that of water (1 g/cm³) and will sink if its density is greater.

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What happens to sugar when it dissolves in water?

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When sugar dissolves in water, it breaks down into smaller particles and spreads evenly throughout the water, forming a solution.

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What is the difference between a mixture and a solution?

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A mixture is a combination of two or more substances that retain their individual properties, while a solution is a type of mixture where one substance is completely dissolved in another.

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What is an example of a physical change?

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An example of a physical change is melting ice into water. The substance remains H2O, but its state changes from solid to liquid.

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What is an example of a chemical change?

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An example of a chemical change is rust forming on iron. The iron reacts with oxygen to create a new substance, iron oxide.

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What is the role of a solvent in a solution?

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The solvent is the substance that dissolves the solute. In a sugar solution, water is the solvent.