Physical and Chemical Changes

chemical change

a change in matter that produces one or more new substances

physical change

a change in a substance that does not change its identity

physical property

a characteristic that can be observed or measured without changing the identity of the substance

chemical property

a property of matter that describes a substance's ability to participate in chemical reactions

chemical reaction

process that changes one set of chemicals into another set of chemicals

solution

A mixture that forms when one substance dissolves another

solute

the substance that is dissolved

solvent

the substance in which the solute dissolves

density

the mass per unit volume of a substance (d=m/v), physical property

odor

smell, physical property

flammability

the ability to burn; chemical property

reactivity

how easily one thing reacts with something else; chemical property

texture

how a substance feels, physical property

combustion

the process of burning something; chemical property

boiling point

the temperature at which a substance changes from a liquid to a gas; physical property

melting point

the temperature at which a substance changes from a solid to a liquid; physical property

luster

the way a mineral reflects light; physical property

solubility

the ability to dissolve in another substance; physical property

transparency

the physical property of a substance to let light through

brittleness

the tendency to crack or break; physical property

ductility

the ability of a substance to be drawn into a thin wire without breaking; physical property

malleability

the ability of a substance to be hammered or pressed into shape without breaking; physical property

precipitate

a solid that forms from a liquid solution during a chemical reaction