All About Reaction Types
What type of reaction is this equation?
3 H2(g) + N2(g) → 2 NH3(g)
Synthesis
What is the definition of a chemical reaction?
A chemical reaction is a process in which one or more substances change into a new substance.
Solve:
___ HCl + ___ NaOH --> ___ NaCl + ___ H2O
_1__ HCl + _1__ NaOH --> _1__ NaCl + _1__ H2O
Define an aqueous solution
A chemical solution in which the solvent is water
What are the four indicators of a chemical reaction?
Color change, gas production, formation of a precipitate, change in temperature
What type of reaction is this equation?
Cu + 2 AgNO3 → 2 Ag + Cu(NO3)2
Single Replacement
Lead + zinc acetate --> Zinc + lead acetate
Pb + Zn(C2H3O2) --> NR
Solve:
__ H3PO4 + __ Mg(OH)2 --> __ Mg3(PO4)2 + __ H2O
_2_ H3PO4 + _3_ Mg(OH)2 --> _1_ Mg3(PO4)2 + _6_ H2O
Does calcium hydroxide dissolve in water?
no, it is insoluble
In a chemical reaction, what is the symbol that separates the reactants from the products?
the Yield sign
What type of reaction is this equation?
KOH + H2SO4 → K2SO4 + H2O
Double Replacement
Solve if not possible write no reaction
2Al + 3H2SO4 -->
3 H2 + Al2(SO4)3
Solve:
___ C2H6 + ___ O2 --> ___ CO2 + ___ H2O
_2__ C2H6 + _7__ O2 --> _4__ CO2 + _6__ H2O
what is the difference between a solvent and a solute?
Solutes are the substances that are dissolved in the solvents
What does the Law of Conservation of Mass state?
the mass of the reactants must be equal to the mass of the products; mass cannot be created or destroyed
What type of reaction is this equation?
H2CO3(aq) → H2O(l) + CO2(g)
Decomposition
Solve if not possible write no reaction
Fe + Pb(NO3)2 -->
Pb + Fe(NO3)2
Solve:
__ Ca3(PO4)2 + __ SiO2 + __ C --> __ CaSiO3 + _CO + __ P
_1_ Ca3(PO4)2 + _3_ SiO2 + _5_ C --> _3_ CaSiO3 + _5_ CO + _2_ P
Can carbonic acid be dissolved in water? Explain why.
Yes, it can.
Reason: all salts of carbonate are insoluble however, an exception is made when it is paired with an alkali metal such as hydrogen.
What are the small numbers written in a chemical formula that indicate the number of atoms of an element in a compound?
subscripts
What type of reaction is this?
C3H8 + 5O2 → 3CO2 + 4H2O
Combustion Reaction
. 2Al + 3Pb(NO3)2 -->
3Pb + 2Al(NO3)
Solve:
___ C10H22 + ___ O2 --> __ CO2 + ___ H2O
_2_ C10H22 + _31_ O2 --> _20_ CO2 + _22_ H2O
In the following chemical reaction, which of the products is the precipitate formed in the reaction? Aluminum Iodide reacts with Mercury (II) chloride to form aluminum chloride and mercury (II) iodide
Mercury (II) Iodide
Define chemical Equation
Symbols and formulas relative molecular amounts of reactants and products.