Chapter 21 Vocabulary Words
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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| show | A change in which one or more substances are converted into new substances.
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| Reactant | show 🗑
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| show | The new substances that are produced.
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| show | A way to describe a chemical reaction using formulas and other symbols.
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| Coefficient | show 🗑
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| show | In a chemical formula, a number below and to the right of a symbol indicating number of atoms.
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| Balanced Chemical Equation | show 🗑
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| Combustion Reaction | show 🗑
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| show | Two or more substances combine to form another substance.
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| show | Occurs when one substance breaks down into two or more substances.
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| Single-displacement Reaction | show 🗑
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| Double-displacement Reaction | show 🗑
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| show | An insoluble compound that comes out of solution during a double-displacement reaction.
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| Oxidation | show 🗑
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| show | The term to describe the gain of electrons in a reaction.
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| show | The force that holds two atoms together.
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| show | Chemical reactions that release energy.
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| show | Energy given off in a reaction in the form of heat.
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| show | Chemical reaction that requires energy to begin.
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| show | Chemical reaction that requires heat energy to begin.
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| show | A substance that speeds up a chemical reation without being permanently changed itself.
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| show | A substance that slows down a chemical reaction.
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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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