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14 Cards in this Set
- Front
- Back
synthesis reactions
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when two or more atoms, ions, or molecules combine to form new and larger molecules (synthesis=to put together)
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How can a synthesis reaction be expressed?
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A + B -> AB
Atom, ion or molecule A + Atom, ion, or molecule B -> (combine to form) new molecule AB |
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Name an example of a synthesis reaction.
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the reaction between two hydrogen molecules and one oxygen molecule to form two molecules of water
H2 + O2 -> H2O |
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All the synthesis reactions that occur in your body are collectively referred to as _____________________.
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anabolism - building up(endergonic because they absorb more energy than they release)
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Decomposition reactions
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split up large molecules into smaller atoms, ions, or molecules (catabolism)
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How can a decomposition reaction be expressed?
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AB -> A + B
molecules AB -> breaks down into Atom, ion, or molecule A + atom, ion, or molecule B |
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Decompostion reactions that occur in your body are collectively referred to as _____________________.
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catabolism - breaking down (exergonic because they release more energy than they absorb)
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exchange reactions
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consist of both synthesis and decomposition reactions
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How can an exchange reaction be expressed?
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AB + CD -> AD + BC
bonds between A and B and between C and D break and new bonds form between A and D and between B and C |
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Give an example of an exchange reaction.
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HCl + NaHCO3 -> H2CO3 + NaCl
Hydrochloric acid + Sodium bicarbonate -> Carbonic acid + Sodium chloride |
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What is oxidation?
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The loss of electrons from a molecule
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reversible reaction
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in a reversible reaction, the products can revert to the original reactants
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How is a reversible reaction indicated?
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two half arrows pointing in opposite directions
AB <=====> A + B AB breaks down into -> / or combines to form <- A + B |
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True or False?
Some reactions are reversible only under special conditions. |
True. AB <===> A + B
--> water; <-- heat |