chemistry ch 2 test review
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
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