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 | •that which has mass and occupies space
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| Pure Substance | a chemical substance is a material with a specific chemical composition
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| Element | •chemical element: any of the more than 100 known substances that cannot be separated into simpler substances and that singly or in combination constitute all matter
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| Compound | •consisting of two or more substances or ingredients or elements or parts
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| Mixture | a substance consisting of two or more substances mixed together
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| Homogeneous Solution | a solution is a homogeneous mixture where one substance is dissolved in another
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| Heterogeneous Solution | Particle size distinguishes homogeneous solutions from other heterogeneous mixtures.
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| Distillation | •the process of purifying a liquid by boiling it and condensing its vapors
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| Physical Changes | concept introduced to contrast with the concept of chemical change. A physical change is any change not involving a change in the substance's chemical identity
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| Physical Properties | •A physical property is any measurable property the value of which describes a physical system's state at any given moment in time
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| Chemical Changes | bonds are broken and new bonds are formed between different atoms
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| Chemical Properties | any of a material's properties that becomes evident during a chemical reaction; that is, any quality that can be established only by changing a substance's chemical identity
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| Law of Conservation of Matter | •Matter is neither created nor destroyed, but is combined and rearranged in different ways
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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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