EMEQ Vocabulary
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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Law of Conservation of Mass | the mass of substances produced (products) by a chemical reaction is always equal to the mass of the reacting substances (reactants)
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Physical change | change in subsitance that only effects physical properties,such as size or shape
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Chemical Change | produces a new substance with different properties than original substince
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Element | substance that can not be broken down into simpler substances
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Chemical formula | a representation of a substance using symbols for its constituent elements
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Element (Diatomic) Molecule | a molecule consisting of only 2 of the same atoms which are covalently bonded together
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Compound molecule | two or more elements that are bonded together
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Chemical equation | a written representation of the process that occurs in a chemical reaction (products on right and reactants on left)
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Chemical reaction | a process in which one or more substances are converted to one or more different substances
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Reactants | The chemical formulas on the that represent the starting substances
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Products | The substances produced by the reaction on the left
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Coefficient | number in front of the equation that tells how many molecules that are (if no coefficient shown, its one)
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Subscript | shows how many atoms of each element there are
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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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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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