what is matter
any thing that has mass and takes up space
what is mass
amount of matter an object contains
something that contains only one kind of matter
what is a physical property
cother solubility odor hardness density melting point boiling point
what is a solid
sometthing that has a definite shape and volume
what is a liquid
form of mather that flows has a fixed volume and takes shape of its container
what is gass
takes both shape and volume of container
what is vapor
the gaseous state of a substance that is normaly solid or liquid at room temp
what is a mixture
a physical blend of two or more substances
what is heterogeneous mixture?
one that is not uniforn in composition
what is homogeneous mixture?
is completly uniform in composition
what is a compound?
a substance that can be seperated into simpler substances only by chemical means
what is a chemical reation
one or more substance chanves into a new substance
what is a reactant?
what is a product?
substances formed by reactants
what is a qualitative measurment?
gives results in a descriptive nonnumerical form
what is a quantitative measurement?
gives results in a definite form usualy numbers
what is accuracy?
a measurement of how close a measurement comes to the actual or true value of what ever is measured
what is percision?
a measure in how close a series of measurements are to one another
what is a error
the difference between the accepted calue and the experimental
what is a percent error?
is the absolute value of the error divided byt the accepted valure multiplied by 100%