Chemical Reactions
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 | The study of matter and how matter changes.
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| Matter | Anything that has mass and takes up space.
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| Reactants | The substances on the left side (beginning) of a chemical equation.
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| Chemical equation | A shorter, easier way to show chemical reactions using symbols instead of words.
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| Conservation of mass | Matter is not created or destroyed.
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| Endothermic | A chemical reaction that absorbs energy in the form of heat.
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| Activation energy | The minimum amount of energy that has to be added to start a reaction.
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| Inhibitor | A material used to decrease the rate of a chemical reaction.
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| Combustion | A rapid reaction between oxygen and a fuel.
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| Enzymes | Chemicals that act as biological catalysts by speeding up reactions in living things.
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| Subscript | The number placed below an element's symbol in a chemical formula.
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| Chemical change | A change that produces a new substance.
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| Coefficient | Tells you how many atoms or molecules of a reactant or a product take part in a reaction.
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| Precipitate | A solid that forms from solution during a chemical reaction.
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| Exothermic | A chemical reaction that releases energy in the form of heat.
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| Open system | Where matter can enter from or escape to the surroundings.
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| Chemical formula | Shows the ratio of elements present in a compound.
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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:
sikkwl
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