Vocab Ch. 5-8
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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| significant figurea | the certain digits and the first uncertain digit of a measurement
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| conversion factor | a ratio used to convert from one unit to another
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| atomic mass unit (amu) | a small unit of mass equal to 1.66 x 10^-24 grams
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| average atomic mass | the weighted average of the masses of all the isotopes of an element
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| mole | the number equal to the number of carbon atoms in exactly 12 grams of pure 12 C: Avogadro's number. One mole represents 6.022 x 10^23 units
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| avogadro's number | the numbers of atoms in exactly 12 grams of pure 12 C, equal to 6.022 x 10^23
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| molar mass | the mass in grams of 1 mole of the substance
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| empirical formula | the formula of a compound expressing the smallest whole-number ration of atoms in a compound
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| molecular formula | the actual formula of a compound giving the types of atoms and numbers of each type of atom
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| chemical reaction | one or more substances are changed into one or more new substances by the reorginization of component atoms
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| chemical equation | a representaion of a chemical reaction using the formulas of the starting substances that react and the the new substances that are formed
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| reactant | the starting substance of a chemical reaction, shown to the left of the reaction arrow
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| product | the new substance formed by a chemical reaction, shown to the right of the reaction arrow
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| coeffiecient | the number written in front of the chemical formulas in a balance chemical equation- coefficients indicate the relative numbers of reactants and products in the reaction
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| precipitation | the formation of a solid in a chemical reaction
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| precipitate | the solid that forms in a precipitation reaction
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| precipitation reaction | a reaction in which a solid forms and separates from the solution
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| strong electrolyte | a substance that dissolves in water by dissociation completely into ions
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| soluble solid | a solid that readily dissolves in water
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| insoluble solid | a solid that dissolves to such a small degree that it is not detectable to the naked eye
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| strong acid | an acid that completely dissociates to produce H+ ions in solution
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| strong base | a basee that completely dissociates to produce OH- ions in solution
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| oxidation reduction reaction | a chemical reaction involving the transfer of electrons
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| double displacement reaction | AB + CD ---> AD + CB
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| acid base reaction | involves H+ ion that ends up in the product water
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| single replacement reaction | A + BC ---> B+AC
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| combustion reaction | a chemical reaction involving oxygen as one of the reactants that produces enough heat so that a flame results
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| synthesis (combination) reaction | a chemical reaction in which a compound is formed from simpler materials
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| decomposition reaction | a chemical reaction in which a compound is broken down into simpler compounds, or into the component elements
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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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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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