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Chapter 2 Vocabulary

Chapter 2 vocabulary f

TermDefinition
Pure Substance Matter that always has exactly the same composition
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 The parts of a mixture are noticeably different from one another
Homogeneous Mixture A type of mixture in which the substances are so evenly distributed that it is difficult to distinguish one substance from another
Solution The mixture that forms when substances dissolve and form a homogeneous mixture
Suspension A heterogeneous mixture that seperates into layers
Colloid Contains some particles that are intermediate in size between the small particles in a solution and the larger particles in a solution.
Physical Property Any characteristic of a material that can be observed or measured without changing the composition of the substances in the material.
Viscosity A Liquids resistance to flowing
Conductivity A Materials ability to allow heat 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
Filtration A process that seperate materials based on the size of their particles.
Distillation A Process that seperates the substance in a solution based on their booing points
Physical change Occurs when some of the properties of a material change but the substances in the material stay the same
Chemical property Any ability to produce a change in the composition of matter.
Flammability A materials ability to burn in the presence of oxygen.
Reactivity How readily a substance combines chemically with other substances.
Chemical Change Occurs when a substance reacts and forms one or more new substances.
Precipitate Solid that forms and separates from a liquid mixture.
Created by: heather.kriston