Ch 1 Flashcards
The three states of matter
1 solid state
2 liquid state
3 gas state
Solid state
Composed of highly organized particles that lie close together
Liquid state
Is composed of particles that lie close together but are less organized than the solid state
Gas state
Is composed of highly disorganized particles that lie far apart
Matter can be classified as
A pure substance or a mixture
Element
Is a pure substance that cannot be broken down into simpler substances by a chemical reaction
Compound
Is a pure substance formed from two or more elements
Mixture
Is composed of more than one substance
A mixture can be separated into its components by physical changes.
Pure substance
A substance that contains a single component, and has a constant composition regardless of the sample size
A pure substance cannot be
Broken down to other pure substances by any physical change
Mixtures can be formed from
Solids
Liquids
Gases
Solid
Has a definite volume and maintains its shape regardless of the container in which it’s placed.
Liquid
Has a definite volume but takes on the shape of the container it occupies.
Gas
Has no definite shape or volume.
The particles of gas expand to fill the volume and assume the shape of whatever container they are put in.
Physical properties
Are those that can be observed or measured without changing the composition of the material
