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IGHS Winkels

Physical Science Chapter 2

QuestionAnswer
Pure Substance matter that always has exactly the same composition
Element a substance that cannot be broken down into simpler substances
Atom 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 the mixture are noticeable different from one another
Homogeneous Mixture substances are so evenly distributed that it is difficult to distinguish one substance in the mixture from another
Solution the mixture that forms when substances dissolve and form a homogenous mixture
Suspension a heterogenous mixture that separates into layer 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 characteristic of a material that can be observed or measured without changing the composition of the substances in the material
Viscosity the tendency of a liquid to keep from flowing
Conductivity a material's 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
Distillation a process that separates the substances in a solution based on their boiling points
Filtration a process that separates materials based on the size of their particles.
Physical Change occurs when some of the properties of a material change
Chemical Property any ability to produce a change in the composition of matter
Flammability a material's ability to burn in the presence of oxygen
Reactivity the property that describes how readily a substance combines chemically with other substances
Precipitate any solid that forms and separates from a liquid mixture
Chemical Change occurs when a substance reacts and forms one or more new substances
Created by: Winkels
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