science
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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chemistry | is the study of properties
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element | is a substance that cannot be broken down into any other substance by chemical or physical means
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compound | is a substance made of two or more elements
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mixture | made from two or more pure substances
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solution | a well mixed mixture
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physical change | a change that alter the form of appearance of a material
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chemical change | a change in matter that produces a new substance
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precipitate | a solid that forms during a chemical reaction
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atom | the smallest particle of an element
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molecule | the combination of two or more atoms
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chemical bond | the force that holds atoms together
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chemical equation | is a shorter easier way to show chemical reactions
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subscript | shows the number of atoms of an element in a molecule
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reactants | the material you have at the beginning of a chemical reaction
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symbol | one or two letter symbol
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coefficient | a number in front of a chemical formula in the equation
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synthesis | when two or more substances combine to make a more complex substance
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decomposition | a reaction that breaks down compounds into simpler products
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exothermic reaction | a reaction that releases energy in the form of heat
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endothermic reaction | a reaction that absorbs energy
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activation energy | is the minimum amount of energy that has to be added to a start a reaction
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concentration | is the amount of one material in a given volume of another material
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catalyst | a material that increases the rate of a reaction by lowering the activation energy
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enzymes | provide a surface on which reactions take place
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inhibitor | a material used to decrease the rate of a reaction
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fuel | 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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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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Created by:
dirtnasty
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