Kinetics/Misc.
What is the only thing you can adjust when balancing chemical equations?
Chemical Coefficients
What type of chemical reaction is this?
HCl + NaOH = H2O + NaCl
Neutralization reaction/ Double replacement
What type of chemical reaction is this?
2Al2O3 + heat = 4Al + 3O2
Decomposition reaction
What actually determines if a reaction will occur or not?
How reactive the specific elements used in the reaction are. Some elements are more reactive than other elements.
Why will Iron powder burn faster than an iron ingot?
It has more surface area
Why do we need to balance chemical equations?
Law of Conservation of Mass
What type of chemical reaction is this?
4Cu + O2 = 2Cu2O
Synthesis Reaction / Metal Combustion
Balance this chemical reaction:
H2 +O2 = H2O
2H2 + O2 = 2H2O
What does (almost) every decomposition reaction need to occur?
An outside force such as heat
Answer both parts for the points:
What does a subscript on the outside of a parenthesis do to the number of atoms inside the parenthesis?
What does a coefficient in front of a chemical formula do the atoms inside the chemical formula?
Both multiply
How does stirring or mixing a solution affect the rate of that chemical reaction?
Increases the rate of reaction by adding additional energy to the system.
What type of chemical reaction is this?
CH4 + 2O2 = CO2 + 2H2O
Combustion reaction
Balance the following reaction:
Al + HBr = AlBr3 + H2
2Al + 6HBr = 2AlBr3 + 3H2
For the following reaction, write the correct states of matter, predict the products, and balance the chemical equation:
Aluminum metal reacts with iron(II) oxide powder
Al(s) + FeO(s) = NO REACTION
How can we force nearly any reaction to occur?
Applying an outside force, Le Chatliers Principle.
Change pressure, concentration, temperature, etc.
How does changing temperature change the rate of reactions? Explain in detail.
Higher temperatures increase particle motion and particle energy causing reactions to occur faster.
What type of reaction is this?
Mg + Cu(NO3)2 = Mg(NO3)2 + Cu
Single Replacement Reaction
Balance this chemical reaction:
C2H6 + O2 = H2O +CO2
2C2H6 + 7O2 = 6H2O + 4CO2
For the following reaction, write the correct states of matter, predict the products, state what type of reaction is occurring, and balance the chemical equation:
Methane (CH4) is ignited
CH4(g) + 2O2(g) = CO2(g) + 2H2O(l)
Combustion reaction
Of the three states of matter that exist on planet Earth, place them in order of how fast they will react in chemical reactions.
Gasses, Liquids, Solids
How does changing concentrations affect the rates of reaction. Explain with an example.
2Molar HCl will react faster with a base faster than 1Molar HCl
What type of reaction is this?
CaCO3 + 2HCl = CaCl2 + H2CO3
Double Replacement reaction
Balance the following reaction:
KCl +Mg(NO3)2 = KNO3 + MgCl2
2KCl +Mg(NO3)2 = 2KNO3 + MgCl2
For the following reaction, write the correct states of matter, predict the products, state what type of reaction is occurring, and balance the chemical equation:
Iron(III) Chloride and sodium carbonate solutions are combined.
2FeCl3(aq) + 3Na2CO3(aq) = Fe2(CO3)3(s) + 6NaCl(aq)
double replacement
Under Collision theory, for a chemical reaction to occur what two things must occur?
The particles must collide with enough energy and must collide with the correct orientation