chapter 2 chemistry
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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| mass | a measure of the amount of matter the object contains
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| volume | a measure of the space occupied by the object
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| extensive property | a property that depends on the amount of matter in a sample
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| intensive property | a property that depends on the type of matter in a sample, not the amount of matter
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| substance | matter that has a 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 | form of matter that has definite shape and volume
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| liquid | form of matter that has an indefinite shape, flows, yet has a fixed volume
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| gas | form of matter that takes both the shape and volume of its container
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| vapor | describes the gaseous state of a substance that is generally a liquid or solid at room temperature, as in water vapor
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| physical change | some properties of a material change, but the composition of the material does not change
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| mixture | is a physical blend of two or more components
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| homogeneous mixture | is a mixture in which the composition is uniform throughout
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| heterogeneous mixture | A mixture in which the composition is not uniform throughout
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| solution | Another name for a homogeneous mixture is a
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| phase | is used to describe any part of a sample with uniform composition and properties
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| filtration | The process that separates a solid from the liquid in a heterogeneous mixture
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| distillation | a liquid is boiled to produce a vapor that is then condensed into a liquid
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| element | is the simplest form of matter that has a unique set of properties
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| compound | is a substance that contains two or more elements chemically combined in a fixed proportion
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| chemical change | is a change that produces matter with a different composition than the original matter
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| chemical symbol | Each element is represented by a one or two letter
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| chemical property | The ability of a substance to undergo a specific chemical change
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| chemical reaction | One or more substances change into one or more new substances
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| reactant | A substance present at the start of the reaction
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| product | A substance produced in the reaction
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| precipitate | a solid that forms and settles out of a liquid mixture
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| the law of conservation of mass | states that in any physical change or chemical reaction, mass is conserved
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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.
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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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