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Balancing Equations
Types of Reactions
Naming Molecules
Solubility
Stoichiometry
100
In CO2, the 2 is small and is lower than the O. What is this called?
Subscript
100
What type of reaction combines two reactants to make one product?
Synthesis/combination reaction
100
What charge is a cation?
Positive
100
Is a precipitate soluble or insoluble?
Insoluble
100
4 NH3 + 5 O2 -> 6 H2O + 4 NO How many moles of Oxygen are reacting in this chemical reaction?
5
200
What numbers in a chemical equation do you change to balance it?
coefficients
200
How many reactants are involved in a decomposition reaction?
ONE
200
In an ionic compound, which comes first, the cation or the anion?
Cation
200
NaNO3 dissolves in a liquid solution. How do you write this compound when including the state of matter it is in?
NaNO3 (aq)
200
You are assembling hot dogs. You have 8 buns and 5 dogs. Which is the limiting reactant?
dogs
300
What does the law of mass conservation state?
the number of each element in the reactants must equal the number of those elements in the products.
300
When a free element takes the place of an element in a compound, what kind of reaction is taking place?
Single Replacement Reaction
300
What is the charge of the ion "OH"?
1-
300
Is a substance with a NO3- ion soluble or insoluble?
soluble
300
4 NH3 + 5 O2 -> 6 H2O + 4 NO If you use 8 moles of NH3, how many moles of H2O are produced?
12 moles of H20
400
Balance : ___ H2 + ___ Cl2 -> ___ HCl
___ H2 + ___ Cl2 -> _2_ HCl
400
CO2 and H2O were produced when we burned the ethanol in lab in the fume hood. What type of reaction is this?
Combustion reaction
400
If the cation has a charge of 2+ and the anion has a charge of 1-, how many of each do you need to make the ionic compound neutral?
1 cation and 2 anions
400
NaOH and KNO3 react in solution. What ions do these polyatomic compounds dissociate into?
Na+ , OH- , K+ , NO3-
400
4 NH3 + 5 O2 -> 6 H2O + 4 NO If 9.5 moles of H20 are produced, how many moles of O2 were used?
7.9 moles of 02
500
Balance: ___ Ca + ___ H20 -> ___ Ca(OH)2 + ___ H2
_1_ Ca + _2_ H20 -> _1_ Ca(OH)2 + _1_ H2
500
Use letters or symbols to give an example of a double replacement reaction.
AB + CD -> AD + CB
500
If Co(NO3)2 is an ionic compound, then what must the charge of Co be?
2+
500
NaOH and KNO3 react in solution. What products are produced, and which of the two is a precipitate?
Precipitate: KOH (s) Non-precipitate/dissolved: NaOH (aq)
500
What is the purpose of stoichiometry?
So that when we know the amount of one reactant or product, we can determine the amount of other reactants and products that are in the reaction.