Classification of Matter -Ch 1

Matter

Anything that has mass and takes up space

solid

has a definite shape and definite volume -atoms or molecules are close -condensed state(small package)

Liquid

-atoms or molecules close but can move freely past each other -condesned state (molecules touching each other)

Gas

-atoms are very far apart from each other -no definite volume -can move past each other freely -very compressible

compound

two or more substance in fixed, definite proportion

element

cannot be chemically broken down into simpler substances

pure substances

made up of only one component

Mixture

two or more components in proportions that can vary

Homogenous

uniform throughout (sugar water)

Heterogenous

composition varios from one region to another

physical

can be used to separate a mixture into its pure components

physical change

does not alter the composition or identity of a substance

chemical change

alters the composition or identity of the substances involved

physical property

a property that a substance displays without changing its composition

chemical property

a property that a substance displays only by changing its composition