compound

• a substance whose molecules contain atoms of different elements
• cannot be separated by ordinary means
• does not keep properties of elements that make it up

mixture

• a combination of 2 or more substances that does not make a new substance
• can be separated
• each substance keeps its own properties

solution

• a type of mixture with one substance spread out evenly in another
• you cannot see the individual substances

suspension

• a type of mixture with particles of one (or more) substance visable
• these particles will sink to the bottom of the mixture if left to settle

dissolve

to form a solution with another substance

solubility

measure of how much a substance will dissolve in another

alloy

a solution of two different metals