chapter 2
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 | the substance or substances of which any physical object consists or is composed
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| pure substance | A sample of matter, either an element or a compound, that consists of only one component with definite physical and chemical properties and a definite composition
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| element | one of a class of substances that cannot be separated into simpler substances by chemical means. See also chart under periodic table
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| compound | composed of two or more parts, elements, or ingredients
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| mixture | an aggregate of two or more substances that are not chemically united and that exist in no fixed proportion to each other
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| homogeneous solution | one substance is dissolved in another
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| heterogenous solution | A heterogeneous mixture would be: salt with sugar (no water), water with gasoline or oil, salt with sand
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| distillation | the volatilization or evaporation and subsequent condensation of a liquid, as when water is boiled in a retort and the steam is condensed in a cool receiver
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| physical changes | something that you can physicaly change
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| physical properties | can be observed or measured without changing the composition of matter. Physical properties are used to observe and describe matter.
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| chemical properties | of matter describes its "potential" to undergo some chemical change or reaction by virtue of its composition. What elements, electrons, and bonding are present to give the potential for chemical change.
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| chemical changes | something that can only be changed chemicaly
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| Law of Conservation of Matter | a fundamental principle of classical physics that matter cannot be created or destroyed in an isolated system
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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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Created by:
kcoons
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