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Chemical Equations
Types of Reactions
Aqueous Solutions
Potpourri
100
What symbol is used in a reaction to mean heat?
a triangle
100
The type of reaction that takes place when one element reacts with a compound to form a new compound and a different element is a ____.
single replacement reaction
100
An ion that appears on both sides of an equation and is not directly involved in the reaction is called a/an _______________
spectator ion
100
True or False: All reactions fall in to one of the 5 categories of reactions
False
200
What is the name of a chemical that is present in the reaction but not used up in the reaction?
catalyst
200
If a combination reaction takes place between rubidium and bromine, the chemical formula for the product is ____.
RbBr
200
What two things must be balanced in a net ionic equation?
mass (# of atoms) and charge
200
Chemical equations must be balanced to satisfy which law?
The law of conservation of mass
300
What does the symbol (<---->) indicate?
The reaction is reversible.
300
Identify the difference between the two types of combustion reactions.
Incomplete - CO will form. Complete - CO2 will form
300
This type of equation shows dissolved ionic compounds as dissociated free ions.
Complete ionic equation
300
Balance the following equation: C7H14 + O2 --> CO + H2O
C7H14 + 7O2 --> 7CO + 7H2O
400
If you rewrite the following word equation as a balanced chemical equation, what will the coefficient and symbol for fluorine be? nitrogen trifluoride --> nitrogen + fluorine
3F2
400
What occurs during a double replacement reaction? How is it identified?
Two ionic compounds react by exchanging cations to form two different compounds. Reactants are compound and compound. Products are compound + compound
400
Identify the precipitate formed when solutions of these ionic compounds are mixed: CaCl2 + Pb(NO3)2
PbCl2
400
What occurs during a decomposition reaction? How is it identified?
Occurs when a single compound is broken down into its elements or simpler compounds. Identify by the presence of only 1 reactant.
500
What determines whether one metal will replace another metal from a compound in a single-replacement reaction?
Whether one metal will replace another is determined by the relative reactivity of the two metals. The activity series of metals lists metals in order of decreasing reactivity. A reactive metal will replace any metal found below it in the activity series.
500
What occurs during a single replacement reaction? How is it identified?
An element replaces another element from a compound in aqueous solution. The reactants will include an element and a compound and the products will include an element and a compound.
500
Explain what determines whether or not a precipitate will form during a reaction?
It depends on the solubility of the new compounds that form.
500
What occurs during a combustion reaction? How is it identified?
Oxygen reacts with an element or compound and combustion (when something burns) will occur. Identify when Oxygen is a reactant.