Chapter 2 Vocabulary
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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| law of conservation of mass | mass can be neither created nor destroyed in an ordinary chemical or physical process
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| matter | anything that has mass and takes up space
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| mass | the amount of matter an object contains
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| substance | matter that has uniform and definite composition
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| physical property | a quality or condition of a substance that can be observed or measured without changing the substance's composition
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| solid | matter that has a definite shape and volume
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| liquid | matter that flows, has a fixed volume, and takes the shape of its container
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| gas | matter that takes both the shape and volume of is container
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| vapor | the gaseous state of a substance that is generally a liquid or solid at room temperature
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| physical change | a change that alters a given material without changing its composition
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| mixture | physical blend of two or more substances
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| heterogeneous mixture | a mixture that is not uniform in composition; you can tell there is multiple things in the mixture
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| homogeneous mixture | a mixture that has a completely uniform composition; you cannot tell there is multiple things in the mixture
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| solutions | a homogeneous mixture
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| phase | any part of a system with uniform composition and properties
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| distillation | a purification process in which a liquid is evaporated and then condensed again to a liquid;
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| elements | a substance that cannot be changed into simpler substances under normal lab conditions
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| compounds | a substance that can be separated into simpler substances only by chemical reactions
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| chemical symbol | a one or two letter representation of an element
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| chemical reaction | the changing of substances to other substances by the breaking of bonds in reactants and the formation of bonds in products
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| reactants | a starting substance in a chemical reaction
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| products | a substance formed in a chemical reaction
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| chemical property | the ability of a substance to undergo chemical reactions and to form now substances
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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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