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17 Cards in this Set
- Front
- Back
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the study of matter and the changes it undergoes
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chemistry
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-substance of the universe
-has properties of mass and volume |
matter
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can be observed without altering the identity of the material
-extensive: mass, length, volume -intensive: melting and boiling point, density, ductility, malleability, color, crystalline shape, refractive index. |
physical properties
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the ability of a substance to undergo a change in which its identity is altered
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chemical properties
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-fluids
-definite volume -no definite shape |
liquids
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-fluids
-no definite shape -no definite volume |
gases
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-rigid
-definite shape -definite volume |
gases
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ability to cause change or do work
-kinetic and potential |
energy
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a process that releases heat
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exothermic
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a process that absorbs heat
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endothermic
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-matter that has constant composition and properties
-composed of only one type of matter |
pure substance
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a combination of two or more kinds of matter in which each component retains its own composition and properties
-homogeneous & heterogeneous |
mixture
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a pure substance that cannot be decomposed by ordinary chemical change
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element
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a pure substance that can be decomposed into two or more simple substances by chemical chage
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compounds
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a method of separating that uses differences in solubility
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filtration
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a method of separating mixtures that uses differences in boiling points
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distillation
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a technique for sperating mixtures that relies on the different abilities of substances to stick to a surface
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chromotography
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