Chemistry Flashcards Template Page 11
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13Chemical Reactions
Some Examples to Try
1)
Diethyl ether is a carbon-hydrogen-oxygen compound.
Reactions involve chemical changes in matter resulting in
The mass percent of carbon, hydrogen and oxygen are
new substances
64.82%, 13.60% and 21.58% respectively. What is its
Reactions involve rearrangement and exchange of
empirical formula ?
atoms to produce new molecules
2)
Reactants →
Products
3)
Chemical Composition
Chemical Reactions
Shorthand way of describing a reaction
methane gas burns to produce carbon dioxide
Provides information about the reaction
gas and gaseous water
whenever something burns it combines with O
(g)
Formulas of reactants and products
2
(g) → CO
CH
(g) + O
(g) + H
O(g)
4
2
2
2
States of reactants and products
Relative numbers of reactant and product
to show the reaction obeys the Law of
molecules that are required
Conservation of Mass, it must be balanced
(g) → CO
Can be used to determine weights of reactants used and
CH
(g) +
2
O
(g) +
2
H
O(g)
4
2
2
2
products that can be made
symbols used to indicate state after chemical
(g) = gas; (l) = liquid; (s) = solid
(aq) = aqueous = dissolved in water
Chemical Reactions
Chemical Reactions
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