28 terms

Chemistry-Prentice Hall Chapter 2

Prentice Hall Chemistry Chapter 2 vocab
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extensive property
property that depends on the amount of mass in a sample
intensive property
property that depends on the type of mass in a sample
physical property
a quality or condition of a substance that can be observed or measured without changing the substance's composition
chemical property
The ability of a substance to undergo a specific chemical change
solid
A form of matter that has a definite shape and volume.
liquid
A form of matter that has a indefinite shape and definite volume
gas
A form of matter that has both a indefinite shape and volume.
physical change
When some properties of a materials change but the composition of the substance doesn't change
chemical change
A change that produces matter with a different composition than the original matter
mixture
A physical blend of two more substances
solution
A mixture that is uniform in composition throughout
heterogeneous mixture
A mixture in which the composition is not uniform.
homogeneous mixture
A mixture in which the composition is uniform.
element
The simplest form of matter that has a unique set of properties.
compound
A substance that contains two or more elements chemically combined in a fixed proportion.
chemical reaction
When one or more substances change into one or more new substances.
reactant
A substance that is present at the start of the reaction.
product
A substance that is produced in the reaction.
precipitate
A solid that forms and settles out of a liquid mixture. e
law of conservation of mass
A law that states that in any physical change or chemical reaction, mass is conserved.
Chemical Symbol
a one- or two-letter representation of an element
Distillation
a process used to separate dissolved solids from a liquid, which is boiled to produce a vapor that is then condensed into a liquid
Filtration
a process that separates a solid from the liquid in a heterogeneous mixture
Mass
a measure of the amount of matter that an object contains; the SI base unit of mass is kilogram
Phase
any part of a sample with uniform composition and properties
Substance
Matter that has a uniform an definite composition; either an element or a compound; also called pure substance
Vapor
describes the gaseous state of a substance that is generally a liquid or a solid at room temperature
Volume
a measure of the space occupied by a sample of matter
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