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2.1/2.2 NotesParker Nolan
Pure SubstancesPure Substance:Matter that always has                              Every sample of a givenexactly the same ...
ElementsElement: A                             An element has a  substance that                             fixed composit...
Compounds                           Compound:  A compound               A substance that is  always contains            ma...
Mixtures            The properties of a                    mixture are less                    consistent than theThe prop...
Heterogeneous Homogenous In a heterogenous mixture, the parts of a                           In a homogenous mixture are n...
Colloid      When substances             A colloid      dissolve and form a         contains some      homogenous mixture,...
Physical Properties - ViscosityThe tendency of a liquidto keep from flowing,the resistance to flow, is   The viscosity of ...
DistillationA process that             Practical use:separates the              Providing water forsubstances in a solutio...
FiltrationA process that            Practical:separates the materials   A strainerbased on the size oftheir particles.
EvaporationA process used to        Property:isolate a solid          Solubilitydissolved in a liquid.
FlammabilityA materials ability toburn in the presence ofof oxygen.Sometimes, not adesirable property
Reactivity how readily a substance combines chemically with other substances.Low reactivity: Nitrogen
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Science2.12.2

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  • Transcript of "Science2.12.2"

    1. 1. 2.1/2.2 NotesParker Nolan
    2. 2. Pure SubstancesPure Substance:Matter that always has Every sample of a givenexactly the same substance has the samecomposition properties because a substance has a fixed, uniform composition. Examples: Table salt and table sugar
    3. 3. ElementsElement: A An element has a substance that fixed composition cannot be broken because it contains down into simpler only one type of substances. atom. An atom is the smallest particle of an element.
    4. 4. Compounds Compound: A compound A substance that is always contains made from two or two or more more simpler elements joined substances and in a fixed can be broken proportion. down into those simpler Example: Silicon dioxide
    5. 5. Mixtures The properties of a mixture are less consistent than theThe properties of properties of a substance. a mixture can vary because the composition of Mixtures can be a mixture is not classified by how well fixed. the parts of the mixture are distributed throughout the mixture.
    6. 6. Heterogeneous Homogenous In a heterogenous mixture, the parts of a In a homogenous mixture are noticeably mixture, the substances different. are so evenly distributed that it is difficult to distinguish oneGreek: substance from another.Hetero means differentGenus means kind
    7. 7. Colloid When substances A colloid dissolve and form a contains some homogenous mixture, particles that the mixture that forms is are called a solution intermediate inions Solutions size between the small A suspension is a particles in a heterogenous mixture solution and the that separates into larger particles layers over time. in a suspension
    8. 8. Physical Properties - ViscosityThe tendency of a liquidto keep from flowing,the resistance to flow, is The viscosity of a liquidviscosity. usually decreases when heated.The greater theviscosity, the slowerthe liquid moves.
    9. 9. DistillationA process that Practical use:separates the Providing water forsubstances in a solution submarinesbased on their boilingpoints
    10. 10. FiltrationA process that Practical:separates the materials A strainerbased on the size oftheir particles.
    11. 11. EvaporationA process used to Property:isolate a solid Solubilitydissolved in a liquid.
    12. 12. FlammabilityA materials ability toburn in the presence ofof oxygen.Sometimes, not adesirable property
    13. 13. Reactivity how readily a substance combines chemically with other substances.Low reactivity: Nitrogen
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