CPS Ch 2 Vocab

physical change

a change where the composition of the matter stays the same

suspension

a heterogeneous mixture containing large particles that separates into layers over a period of time

colloid

a homogeneous mixture containing intermediately sized particles that scatter light

homogeneous

a mixture that does look the same throughout

heterogeneous

a mixture that does not look the same throughout

solution

a mixture that results when substances dissolve to form a homogeneous mixture that cannot be separated by a filter and doesn't scatter light particles

chemical property

a property describing how a substance could change its composition and become a different substance

precipitate

a solid that forms and separates from a liquid mixture because of a chemical reaction

compound

a substance that can be broken down into two or more simpler substances and is made in a specific fixed proportion

element

a substance that cannot be broken down into a simpler substance because it is made of only 1 kind of atom

pure substance

matter that always has the same composition throughout

conductivity

the ability of a material to allow electricity and heat to flow through it

flammability

the ability of a material to burn

boiling point

the temperature at which a liquid begins to become a gas

melting point

the temperature when a solid begins to become a liquid