science vocabulary

physical property

any characteristic of a material that can be observed or measured without changing the composition of the substances in the material

viscosity

the tendency of a liquid to keep it from flowing - its resistance to flowing

conductivity

a materials ability to allow heat to flow

malleability

is the ability of a solid to be hammered without shattering

melting point

the temperature at which a substance changes from solid to liquid

boiling point

the temperature at which something starts to boil

filtration

a process that separates materials based on the size of their particals

distillation

is a process that separates the substances in the solution based on their boiling points

physical change

occurs when some of the properties of a material change, but the substances in the material remain the same

chemical property

the ability to produce a change in the composition of matter

flammability

a materials ability to burn in the presence of oxygen

reactivity

the property that describes how readily a substance combines chemically with other substances

chemical change

occurs when a substance reacts and forms one or more new substances

precipitate

any solid that forms and separates from a liquid mixture