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Chapter 2 Vocab

Study for test

TermDefinition
Pure Substance Matter that always has exactly the same composition; an element or compound:
Element A substance that cannot be broken down into simpler substances:
Atom The smallest particle of an element:
Compound A substance that is made from two or more simpler substances and can be broken down into those simpler substances:
Heterogeneous Mixture A type of mixture in which the substances are so evenly distributed that it is difficult to distinguish one substance in the mixture from another:
Solution A mixture that forms when substances dissolve and form a homogeneous mixture:
Suspension A heterogeneous mixture that separates into layers over time:
Colloid A mixture that contains some particles that are intermediate in size between the small particles in a solution and the larger particles in a suspension:
Physical Change A change that occurs when some properties of a material change, but the substances in the material stay the same:
Viscosity The tendency of a liquid to keep from flowing; Resistance to Flowing:
Conductivity A materials ability to allow heat or electric charge to flow:
Malleability 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 a substance boils; the temperature at which vapor pressure is equal to atmosphere pressure:
Filtration a process that separates materials based on the size if their particles:
Distillation A process that separates the substances in a solution based on their boiling points:
Physical Property Any Characteristics of a material that can be observed or measured without changing the composition of the substance in the material:
Chemical Property Any property that produces a change in the composition of matter:
Flammability A material's ability to burn in the pressure oxygen:
Reactivity The property that describes how readily a substance combines chemically with other substances
Chemical Change A change that occurs when a substance reacts and forms one or more new substances:
Precipitate A solid that forms and separates from a liquid mixture:
Created by: VivionnaClay