Chemical Reactions 2 Flashcards
Chemical equations follow the law of
Conservation of Mass
Mass of product =
(Law of COM)
Mass of reactants
of moles on left side of equation must equal
moles right side of equation
Balancing chemical equations means same number of each type of atoms on
Both sides
Balancing chemical equations involves
Trial and error
_ is when two or more substances combine to make a new product
Synthesis
A + B ➡️ AB is an example of
Synthesis
1 mol hydrogen + 1 mol bromine ➡️
2 mols hydrogen bromine
_ is when one substance breaks apart into two or more different products
Decomposition
Decomposition is the opposite of
Synthesis reaction
AB ➡️ A + B is an example of
Decomposition
2HgO ➡️ 2Hg + (decomposition)
O2
_ is when one element in a compound is replaced by another element
Single replacement
Atoms that form cations will replace the (single replacement)
Cation in a compound
Elements that tend to form anions will replace the _ in a compound (single replacement)
Anion
AB + C ➡️
(Single replacement)
BC
_ is when oxygen reacts with all other elements in the original compound, forming oxides
Combustion
Combustion is when oxygen reacts with all other elements in the original compound, _
Forming oxides
Combustion usually occurs when a hydrocarbon reacts with oxygen to produce a
Carbon dioxide and water
Combustion usually occurs when a _ reacts with oxygen to produce a carbon dioxide and a water
Hydrocarbon
_ is when two compounds react in an aqueous solution
Double replacement
Double replacement aka
Metathesis
In aqueous solution reaction, _ of two reactants switch places (2) (double replacement)
Cations
Anions
When cations and anions switch places, they form _ (double replacement)
Two new compounds or products
AB + CD ➡️ (double replacement/ metathesis)
AD + BC
