Chem 1 & 2

Solid

matter that has definite shape & volume packed closely together o can’t be compressed

Liquid

matter that has no definite shape but definite volume (flows) o takes the shape of the container

Gas

matter that has no definite shape or volume o expands without limits-free to move

Vapor

the gaseous state of a substance that is usually a liquid or solid at room temperature.

Plasma

4th state that exists at very high temperatures.

Physical Property

Can be observed or measured w/o alternating the identity of the material

What are examples of physical property

Color, solubility, hardness, density, b.p, & m.p

Physical change

Alters a substance w/o changing its composition

What is an example of physical change

cutting, freezing, melting, dissolving, & boiling

Chemical property

The ability of a substance to undergo a change that alters its identity

What is an example of chemical property

rot, rust decompose, ferment, corrode, & decay

Chemical change or reaction

Any change when one or more substances are converted into NEW substances

Reactants

Starting substances that undergo change

Products

New substances that are produced

element

simplest form of matter

Compound

substance made up of two or more different substances but only chemically

What is the difference between mixture and compound?

The difference between mixture and compound is that compound is done chemically while a mixture is done physically

Example of mixture

Water and salt

Example of compound

Water

Heterogenous

you can see different materials

Homogenous

you cannot see different materials