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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| Activation Energy | What is needed to start a chemical reaction
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| Arrow | you read the arrow as "yields" in a chemical equation or formula
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| Characteristics of a chemical reaction | changes in energy or changes in properties
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| chemical change | alter the chemical properties of matter new substances with new properties are formed.
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| Chemical Equations | a shorter easier way to show chemical reactions.
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| coefficient | a number placed in front of a chemical formula is an equation
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| conservation of mass | the amount of matter involved in a chemical reaction does not change .
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| controlling rates of a reaction | concentration, temp, surface area, catalysts ,enzymes and inhibitors
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| decomposition reaction | a compound breaks down into a simpler substance
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| endothermic reaction | observable change in energy that shows a chemical reaction took place (makes it feel cooler)
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| exothermic reaction | observable change in energy that shows a chemical reaction took place (heat is given off)
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| physical changes | alter only the physical properties of matter no new substances are formed
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| precipitate | solid that forms from solution during a chemical reaction
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| products | materials you have after a chemical reaction
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| reactants | materials you have at the begging of a chemical reaction
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| Replacement reaction | one part of a compound is displayed by an element or compound
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| states of matter | solid liquid gas
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| sudscripts | show the number of atoms of an element in a molecule or the ration of elelments
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| synthesis reaction | two substances combine to form a new compound
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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.
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