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17 Cards in this Set

  • Front
  • Back
the study of matter and the changes it undergoes
chemistry
-substance of the universe
-has properties of mass and volume
matter
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
the ability of a substance to undergo a change in which its identity is altered
chemical properties
-fluids
-definite volume
-no definite shape
liquids
-fluids
-no definite shape
-no definite volume
gases
-rigid
-definite shape
-definite volume
gases
ability to cause change or do work
-kinetic and potential
energy
a process that releases heat
exothermic
a process that absorbs heat
endothermic
-matter that has constant composition and properties
-composed of only one type of matter
pure substance
a combination of two or more kinds of matter in which each component retains its own composition and properties
-homogeneous & heterogeneous
mixture
a pure substance that cannot be decomposed by ordinary chemical change
element
a pure substance that can be decomposed into two or more simple substances by chemical chage
compounds
a method of separating that uses differences in solubility
filtration
a method of separating mixtures that uses differences in boiling points
distillation
a technique for sperating mixtures that relies on the different abilities of substances to stick to a surface
chromotography