Basic Chemistry Concepts

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Chemical change

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Process by which a new substance is formed; indicators include: color change, temperature change, gas bubble formation, precipitate formation.

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Chemical Property

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Characteristic that describes a substance’s ability to change into a new substance; flammability, ability to rust, reactivity to acid.

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Gas

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Phase of matter in which the particles are moving fastest and furthest apart; has no definite volume or shape.

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Law of Conservation of Matter

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Matter can neither be created nor destroyed; the mass of an object or collection of objects never changes, no matter how the parts are rearranged.

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Liquid

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Phase of matter in which the particles are able to move around; has a definite volume but no definite shape.

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Mass

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The amount of material in an object.

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Matter

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Anything that has mass and volume (takes up space).

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Particle

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A tiny piece of matter.

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Phase

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Form or state of matter: solid, liquid, gas.

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Physical Change

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A change that does not form a new substance.