chemistry ch 2 test review

Topics: Chemistry, Temperature, Chemical substance Pages: 3 (497 words) Published: April 3, 2014
Vocab:
2.1
Mass:
Measure of amount of matter in an object
Volume:
Measure of space occupied by object
Extensive property:
property that depends on amount of matter in a sample
i.e.: mass and volume
Intensive property:
Property that depends on the type of matter in a sample(not amount) i.e.: type of basketball (leather; inside, rubber; outside)
Substance:
Matter that has a uniform and definite composition
Physical property:
Quality or condition of a substance that can be observed without changing the substances composition Solid:
Form of matter that has a definite shape and volume
Liquid:
Form of matter that has an indefinite shape, flows, yet has a fixed volume Gas:
Form of matter that takes shape and volume of container
Vapor:
Describes gaseous state of a substance that is generally a liquid or solid at room temp. Physical change:
Some properties of a material change but the composition does not i.e.: melting ice
2.2
mixture:
physical blend of two or more components
heterogeneous mixture:
composition is not uniform throughout
homogeneous mixture
mixture where the composition is uniform throughout
also called a solution
phase:
used to describe any part of a sample with uniform composition and properties filtration:
process of separating solid from liquid in a heterogeneous mixture distillation:
liquid is boiled to produce a vapor that is condensed into a liquid i.e.: separating water from other components in tap water
2.3
element
simplest for mof matter that has a unique set of properties
compound:
subsgtance that contains two or more elements chemically combined in a fixed proportion chemical change:
change that produces matter with a different composition than the original matter chemical symbol:
each element represented by a one or two letter “symbol” periodic table:
arrangement of elements where the elements are separated into groups based on a set of repeating properties period
each horizontal row of the periodic...
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