Chemistry Test - Reactions Flashcards
Synthesis Reactions:
A reaction in which two reactants combine to make a larger or more complex product.
General Pattern for Synthesis
A + B -> AB
What is this an example of: (Synthesis or Decomposition)
Mg(s) + Cl2(g) -> MgCl2(s)
Synthesis
Decomposition Reactions:
A reaction in which a large or more complex compound breaks down to form two (or more) simpler products.
General Pattern for Decomposition:
AB -> A + B
What is this example of: (Synthesis or Decomposition)
2C7H5(NO2)3(s) -> 7C(s) + 7CO(g) + 3N2(g) + 5H20(g) + energy
Decomposition
Bromothymol Blue is an indicator that something is ? or ?
acidic
basic
if something is blue or stays blue…
it is basic
if something is turned green or turning yellow…
it is acidic
when we breathe CO2 (carbon dioxide) into H2O (water) with Bromothymol Blue in it, it turns
green
when we add Baking Soda (NaHCO₃) back into that, it turns…
blue again
when a compound with only non-metals such as CO2 is added to a solution, it makes it…
acidic
when a compound with a metal + non-metal such as NaHCO₃ is added to a solution, it makes it…
basic
Carbon Dioxide (CO2) is an issue during global warming because…
when CO2 is added to ocean water it makes it acidic and causes things like shells to dissolve
Phenolphthalein is an Indicator that something is ? or ?
acidic
basic
Single Displacement Reaction:
A reaction in which an element displaces another element in a compound, producing a new compound and a new element.
General Pattern for Single Displacement
A + BC -> AC + B
What is this an example of: Zn(s) + Cu(SO4)(aq) -> ZnSO4(aq) + Cu(s)
Single Displacement
Double Displacement:
A reaction in which elements in two compounds displace each other or trade places, producing two new compounds.
General Pattern for Double Displacement:
AB + CD -> AD + CB
What is this an example of: CuSO4(aq) + 2NaOH(aq) -> Cu(OH)2(s) + Na2SO4(aq)
Double Displacement
For single displacement reactions to occur:
These reactions require a solid metal and a metal solution.
In order for a reaction to occur, the solid metal must be above, or higher than the metal in solution on the Activity Series of Metals
Single displacement stealing theory:
- A can steal B’s girlfriend C if A is higher than B on the Activity Series
- If A is not higher than B on the activity series A cannot steal B’s girlfriend C and no reaction occurs
For a single displacement reaction to occur the solid metal must be ? the solution
metal/element in the ? series of ?.
Above
Activity
Metals
