Chem Ch. 2
Terms
undefined, object
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- phase
- any part of a system with uniform composition and properties
- mass
- amount of matter an object contains
- chemical reaction
- one or more substances change into new substances
- physical property
- a quality or condition of a substance that can be observed or measured without changing the substances composition
- solution
- homogeneous mixtures
- element
- the simplest form of matter that can exist under normal laboratory conditions
- matter
- anything that has mass and takes up space
- compound
- substances that can be separated into similar substances by only chemical means
- liquid
- a form of matter that flows
- law of conservation of mass
- in any physical change or chemical reaction, mass is neither created or destroyed; it is conserved
- product
- substance formed in a chemical reaction
- reactant
- starting substances in a chemical reation
- substance
- matter that has uniform and definite composition
- vapor
- gaseous state of a substance
- gas
- a form of matter that takes both the shape and volume of its container
- chemical property
- the ability of a substance to undergo a chemical reaction and to form new substances
- distillation
- a liquid is boiled to produce a vapor that then is condensed again to liquid
- mixture
- a physical blend of two or more substances
- physical change
- a change which alters a given material without changing its composition
- solid
- matter that has defined shape and volume
- chemical symbol
- the first one or two letters of an elements name
- heterogeneous mixture
- one that is not uniform in its compostition
- homogeneous mixture
- completely uniform composition