Chemistry Vocabulary 6th Grade – Flashcards
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element
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a pure substance that cannot be separated
into simpler substances by physical or
chemical means
into simpler substances by physical or
chemical means
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matter
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anything that has volume and mass
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compound
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a pure substance composed of two or
more elements that are chemically combined
more elements that are chemically combined
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compound
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a pure substance composed of two or
more elements that are chemically combined
more elements that are chemically combined
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physical property
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a property of matter that can be
observed or measured without changing the identity
of the matter
observed or measured without changing the identity
of the matter
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chemical property
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a property of matter that
describes a substance based on its ability to change
into a new substance with different properties
describes a substance based on its ability to change
into a new substance with different properties
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Physical Change
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the change that affects one or more physical properties of a substance; some physical changes can be undone
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Chemical Change
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a change that occurs when one or more substances are changed into entirely new substances with different properties; chemical changes cannot be reversed using physical means
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Mass
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the amount of matter that something is made of; its value does not change with the objects location in the universe.
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Volume
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the amount of mass that something occupies or the amount of space that something contains.
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density
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the amount of matter in a given space or
volume; the mass per unit volume of a substance
volume; the mass per unit volume of a substance
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melting point
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the temperature at which a substance changes from a solid to a liquid.
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Boiling point
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the temperature at which a liquid boils and becomes gas
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Vaporization
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the change of state from a liquid to a gas; includes boiling and evaporation
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Evaporation
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vaporization that occurs at the surface of a liquid below the liquids boiling point
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Organic compound
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a compound that is composed of carbon-based molecules from living things
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Inorganic compound
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a compound that is composed of non-carbon molecules from non-living things
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Precipitate
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solid particles formed in a liquid solution during a chemical reaction
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Reactivity
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the ability of two or more substances to combine and form a new substance or substances
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Condensation
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change of state from a gas to a liquid
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Sublimation
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the change of state from a solid to a gas
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Periodic table of elements
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created by Dmitri Mendeleev after he discovered that there were similar physical and chemical properties repeated in a regular pattern; he put the elements into groups of seven because every eighth element had similar properties
