RSM Chp. Six
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 | jis anything that mass and takes up space
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| chemistry | the study of matter and how matter changes
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| physical property | is a characteristic of a substance that can be observed without changing the substance into another substance
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| chemical property | is a characteristic of a substance that describes its ability to change into other substances.
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| physical change | is any change that alters the form or appearance of a substance but does make the substance into another substance
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| chemical change | a change in matter that produces one of more new substances
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| reactant | the substances that undergo change in a chemical reaction
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| product | the substances formed by the reaction
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| precipitate | is a solid that forms from solutin during a chemical reaction
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| endothermic reaction | the total making and breaking of bonds results in a net absorption of energy. the energy is absorbed as heat from nearby matter, which cools
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| exothermic reaction | the total making breaking of bonds results in a net release of energy The energy is released as heat into nearby matter
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| chemical equation | is a short, easy way to show a chemical reaction using symbols instead of words
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| conservation of matter | during a chemical reaction, matter is neither created nor destroyed. the total mass of the reactants must equal the total mass of the products
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| open system | matter can enter from or escape to the surroundings.
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| closed system | matter is allowed to enter or leave
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| coeffiecient | is a number placed in front of a chemical formula in an equation
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| synthesis | when two or more elements or compound combine to make a more complex substance
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| decomposition | occurs when compounds break down into simpler products
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| replacement | when one element replaces another in a compound or when two elements in different compounds trade places
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| activation energy | is the minimum amount of energy needed to start a chemical energy
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| concentration | is the amount of a substance in a given volume
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| catalyst | is a materical that increases the rate of a reactin by lowering the activation energy
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| enzyme | the cells in your body (all living things) contain biological catalysts
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| inhibitor | a material used to decrease the rate of a reaction
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| combustion | a rapid reatction between oxygen and a fuel
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| fuel | is a material that releases energy when it burns
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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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