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What is a chemical change?

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A chemical change is a process where one or more substances are transformed into new substances with different properties, often involving heat and light, such as in a fireworks show.

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What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition, such as changing shape or state.

Front

What density will an object need to float on water?

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An object must have a density less than 1 g/cm³ to float on water.

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What is the density of water?

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The density of water is 1 g/ml.

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What are physical properties?

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Physical properties are characteristics of a substance that can be observed or measured without changing the substance into a new one, such as color, shape, and density.

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What indicates a physical change?

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A change in shape indicates a physical change.

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What is an example of a chemical change?

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An example of a chemical change is the burning of wood, which produces ash and smoke.

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What happens during a physical change?

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During a physical change, the form of a substance changes, but its chemical identity remains the same.

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What is the difference between physical and chemical changes?

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Physical changes do not alter the chemical composition of a substance, while chemical changes result in the formation of new substances.

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What is condensation?

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Condensation is the process by which water vapor in the air is changed into liquid water, often seen as droplets on a cold surface.