Physical and Chemical properties and changes.

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What is a Chemical Change?

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A process where substances combine or break apart to form new substances, often accompanied by energy changes, color changes, or gas production. Example: Baking cookies.

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What is a Physical Change?

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A change that affects one or more physical properties of a substance without altering its chemical composition. Example: Melting ice.

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What is a Physical Property?

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A characteristic of a substance that can be observed or measured without changing the substance's identity. Examples include color, odor, boiling point, and taste.

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What is a Chemical Property?

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A characteristic of a substance that describes its ability to change into different substances. Examples include reactivity with acids, flammability, and oxidation states.

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What is the Boiling Point?

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The temperature at which a liquid turns into vapor. It is a physical property of the substance.

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What is Taste in terms of properties?

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A physical property that describes the flavor of a substance, which can be sensed by the taste buds.

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What is Odor?

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A physical property that describes the smell of a substance, which can be detected by the olfactory senses.

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What happens during an Explosion of Fireworks?

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It is a chemical change where the rapid reaction of chemicals produces gas, light, and sound.

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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 an example of a Physical Change?

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Crushing a can or melting butter.