Chemistry Unit 2 Study Guide – Flashcards
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Chemical change
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Change that produces matter with a different composition than the original matter
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Chemical property
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Ability of a substance to undergo a specific chemical change
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Chemical reaction
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One or more substances change into one or more new substances
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Chemical symbol
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Representation of an element
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Compound
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Substance that contains two or more elements chemically combined in a fixed proportion
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Distillation
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A liquid is boiled to produce a vapor that is then condensed into a liquid
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Element
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Simplest form of matter that has a unique set of properties
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Extensive property
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Property that depends on the amount of matter in a sample
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Filtration
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Process that separates a solid from the liquid in a heterogenous mixture
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Gas
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A form of matter that takes both the shape and volume of its container
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Heterogenous mixture
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A mixture in which the composition is not uniform throughout
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Homogeneous mixture
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A mixture in which the composition is uniform throughout
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Intensive property
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A property that depends on the type of matter
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Law of conservation of mass
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In any physical change or chemical change, mass is conserved
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Liquid
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A form of matter that has an indefinite shape, flows, yet has a fixed volume
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Mass
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Amount of matter contained
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Mixture
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Physical blend of two or more compounds
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Phase
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Part of sample with uniform composition
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Physical change
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Quality or condition of a substance that can be observed or measured without changing the substance's composition
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Physical property
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Quality or condition of a substance that can be observed or measured without changing the composition
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Precipitate
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A solid that forms and settles out of a liquid mixture
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Product
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Substance present at finish of chemical reaction
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Reactant
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Substance present at the start of a chemical reaction
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Solid
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A form of matter than has definite shape and volume
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Solution
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Homogenous mixture
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Substance
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Matter that has a uniform and definite composition
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Vapor
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The gaseous state of a substance that is generally a liquid or solid at room temperature, water vapor
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Volume
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Measure of space occupied
