Precipitation Reactions
Oxidation Reduction
Acid/Base
Physical vs Chemical Changes
Potpourri!
100
100 points for each pair! What are the four ions that indictate in AP Chemistry an ionic compound will be aqueous?
NH4+ , NO3- , K+ , Na+
100
100 points for each definition! What is Oxidation? What is reduction?
OIL RIG
100
100 points for each! Define a Bronsted-Lowry Acid. Define a Bronsted Lowry-Base.
A BL Acid is a proton donor. A BL base is a proton receiver.
100
List signs of a chemical reaction! (100 points for each valid one)
Change of state of matter (accepts - gas released/odor AND precipitate formed), change in temp, change in color, emission of light
100
Though Peru does not cite this as an independence day, it regained independence in the War of the Confederation involving itself and these three sovereign nations. 100 points for each!
Chile, Argentina, and Bolivia
200
In a particulate diagram representing a precipitation reaction between aqueous NaCl and aqueous AgNO3, which two ionic species are spectators and would be draw as free floating both before and after the reaction?
NaCl (aq) + AgNO3(aq) -> AgCl (s) + NaNO3(aq)
Na+ and NO3-
200
In the reaction 2Mg(s) + O2 (g) -> 2MgO, which element undergoes oxidation and what is its change in oxidation state?
Mg -> Mg2+ (+ 4,000 points if you mentioned, bingo was his name o)
200
In the equilibrium HNO2(aq)+ F-1 (aq) ⇌ NO2-1(aq)+ HF(aq), identify the Bronsted Lowry Acids and Bases.
Secret 200 points for identifying the correct Acid/Base in the products. HNO2 and HF are Acids. F and NO2 are bases
200
In the distillation ethanol, ethanol goes from a liquid to a gas, is this a physical change or a chemical change, and why?
Physical, molecule is unchanged!
200
These two massive countries in population and size have an independence day of August 15th from the United Kingdom. Who are they?
India and Pakistan
300
Question: When solid CaCO3 is added to dilute HCl, bubbles of carbon dioxide gas are evolved. What is the net ionic equation for this reaction?
CaCO3(s) + 2HCl (aq) -> CO2(g) + H2O(l) + CaCl2(aq)
CaCO3(s) + 2H+(aq) -> CO2(g) + H2O(l) + Ca2+(aq)
300
What is the oxidation state of nitrogen in the nitrate ion (NO3-1) versus the nitrite ion (NO2-1)?
N = +5 to N = +3
300
Water acts as an amphoteric (or amphiprotic) substance. What is the conjugate acid and base for the autoionization of water? H2O (l) -> H3O+ (aq) + OH-(aq)
H3O is acid OH- is base
300
Boiling of water (H2O) involves what intermolecular force from last unit being overcome?
Hydrogen Bonds
300
These two countries have the oldest independence continuous independence days. Country A is from Spain and Country B is from the United Kingdom.
Country A: Portugal
Country B: USA
400
Give me the net!
H2SO4 (aq)+ Ba(OH)2 (aq)→ 2H2O(l) + BaSO4 (aq)
H+ (aq) + OH- (aq)→ H2O(l)
400
For the decomposition of hydrogen peroxide, identify the chemical species reduced. And oxidized? State the change in oxidation state as well!
H2O2 (l) -> H2O (l) + O2 (g)
H2O2 is reduced and oxidized. One Oxygen is reduced from -1 to -2 and one Oxygen is oxidized from -1 to 0.
400
Identify the conjugate base of the bisulfate ion (HSO3-) and the conjugate base of ammonia (NH3).
SO32- and NH2-
400
Classify the diagram as either a physical or chemical change. Explain yourselves!
Both are acceptable with valid justification
400
These three Caribbean countries have three technical independence days! Country A has Two from Spain and One from the USA. Country B has Two from Spain and One from Haiti.
Country A: Cuba
Country B: Dominican Republic