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chapter2

chapter2 vocab

TermDefinition
Pure subtance Matter that always has exactly the same composition.
Element Is a substance that cannot be broken down into simpler substances.
Atom Is the smallest particle of an element.
Compound Is a substance that is made from two or more simpler substances and can be broken down into those simpler substances.
Heterogeneous mixture Parts of the mixture and noticeably different from one another.
Homogeneous misxture The substances are so evenly distributed that it is difficult to distinguish one substance in the mixture from another.
Solution When substances dissolve and form a homogeneous mixture.
Suspension A heterogeneous mixture that separates into layers over time.
Colloid Contains some particles that are intermediate in size between the small particles in a solution and the larger particles in a suspension.
Physical property Is any characteristics of a material that can be observed or measured without changing the composition of the substances in the material.
Viscosity Tendency of liquid to keep from flowing. 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 Substances changes from solid to liquid.
Boiling point Temperature at which a substance boils.
Filtration A process that separates materials based on the size of their particles.
Distilation Separates the substances in a 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 Any ability to produce a change in the composition of matter.
Flammability Materials ability to burn in the presence of oxygen.
Reactivity 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 Solid that forms and separates from a liquid mixture.
Created by: cassandra.yoak