Chem 1210 chapter 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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| Matter | anything that has mass and occupies space
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| property | any characteristic that allows us to recognize a particular type of matter and to distinguish it from other types
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| gas | no fixed volume or shape
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| liquid | distinct volume, no shape
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| solid | definite shape and volume
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| pure substance | matterthat has distinct properties and a composition that does not vary from sample to sample
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| elements | substances that cannot be decomposed into simpler substances
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| compounds | substances composed of two or more elements
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| mixtures | combinations pf two or more substances in which each substance retains its chemical identity
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| law of definite proportions (constant composition) | a pure compound has the same composition and properties regardless of its source
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| heterogeneous mixtures | do not have the same composition, properties, and appearance throughout
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| homogeneous mixtures | uniform throughout
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| solution | homogenous mixture
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| intensive properties | do not depend on the amount of sample
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| extensive properties | depend on the amount of sample
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| precision | a measure of how closely individual measurements agree with one another
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| accuracy | how closely individual measurements agree with the true value
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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.
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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