Chem Unit 1
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Chemistry | chemisty deals with the properties and reactions of subsatnces
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| matter | matter is anything that has mass and occupies space. Exists in three pashes: solid, liquid, gas
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| Pure Substances | each of which has a fixed composition and a unique set of poroperties
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| mixtures | contains two or more substances combined in such a way that each substance retains its chemical identity
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| element | a type of mater tha cannot be broken down into two or more pure substances. There are 15 elements and they are identified by their symbols.
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| Compounds | a pure substance that contains more tha 1 element. have a fixed compisitionand a given compound contains teh same elements inthe same percentages.
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| Homogeneous | a mixture in which the compostion is teh same throughout.
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| heterogeneous | mistures in which the compostion varies throughout.
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| Filltration, Distillation, Chromatagraphy | lab methods used to separate the components of a mixture
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| Precision | how close answers are to echother (reproducibility)
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| Accuracy | how close answer is to the accepted value
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| conversion factor | technique to change one unit to another using a conversion factore.
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| Intensive property | used to identify a subsatnce, independent of amount
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| Extensive properties | depend on amount
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| Chemical Property | ovbserved when the substance changes to a new one
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| Physical property | observed without changing the substance to a new one
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| saturated solution | maximun amount of solute is dissolved at a given temp.
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| unsaturated solution | more solute can dissolve at a given temp.
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| supersaturated solution | more than maximum amount of solute is dissolved at a given temp.
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
cnov232
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