Matter, Mixtures, and Solutions

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What is matter?

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Matter is anything that has mass and takes up space. It can exist in different states such as solid, liquid, or gas.

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What is a mixture?

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A mixture is a combination of two or more substances where each substance retains its own properties. Examples include salad and air.

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What is a solution?

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A solution is a special type of mixture where one substance (the solute) is completely dissolved in another (the solvent). An example is saltwater.

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What is evaporation?

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Evaporation is the process by which a liquid turns into a gas, usually when it is heated.

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What is condensation?

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Condensation is the process by which a gas turns into a liquid, often when it cools down.

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What is thermal energy?

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Thermal energy is the energy that comes from the temperature of matter. The higher the temperature, the more thermal energy it has.

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What is a conductor?

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A conductor is a material that allows heat or electricity to pass through it easily. Metals like copper and iron are good conductors.

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What is an insulator?

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An insulator is a material that does not allow heat or electricity to pass through it easily. Examples include rubber and wood.

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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 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 liquid.