Types
keeps the general pattern of AB --> A + B
What is a DECOMPOSITION reaction?
Na + Cl2 --> NaCl
2Na + Cl2 --> 2NaCl
Calcium hydroxide solution and carbon dioxide gas yields solid calcium carbonate and liquid water.
Ca(OH)2(aq) + CO2(g) --> CaCO3(s) + H2O(l)
TRUE/FALSE - In activity series, a reaction will only occur if the single element is lower on the series then the one currently in the compound.
FALSE - needs to be higher (more desirable to swap)
The solid produced by a chemical reaction that separates from the solution is called
What is a precipitate.
Reaction where 2 compounds swap cations(front parts of compounds)
What is Double Replacement?
___NH4NO2 → _____N2 + ___H2O
1,1,2
Show and balance the reaction for the complete combustion of C2H4
C2H4 + 3 O2 --> 2 CO2 + 2H2O
CuCl2 + H2S -->
What are the products in this double replacement reaction?
CuS + 2 HCl
These are numbers put in front compounds to balance chemical equations once formulas are set
what are coefficents?
The equation shown below is an example of what type of reaction?
CaSO4 + 2K ---> K2SO4 + Ca
Single replacement reaction.
____ NaI + ____ Pb(SO4)2 → ____ PbI4 + ____ Na2SO4
What are the coeffients?
4,1,1,2
Solid aluminum metal and aqueous copper(II) chloride react to produce aqueous aluminum chloride and solid copper metal.
2 Al + 3 CuCl2 --> 2 AlCl3 +3 Cu
CaO + H2O →
Predict the product for this synthesis reaction
Ca(OH)2
Which elements are diatomic?
H2, N2, O2, F2, Cl2, Br2, I2,
Sodium hydroxide (NaOH) reacts with sulfuric acid (H2SO4) is what type of reaction?
Acid Base (special type of double replacement)
___ Ca3(PO4)2 + ___ H2SO4 ___ CaSO4 + ___ H3PO4
1, 3, 3, 2
Aluminum sulphate solution and calcium hydroxide solution produce a precipitate of aluminum hydroxide and solid calcium sulphate.
Al2(SO4)3(aq) + 3 Ca(OH)2(aq) --> 2 Al(OH)3(s)+ 3 CaSO4(s)
____ BaBr2 + ____ Na2CO3 →
What are the products?
BaCO3 + 2 NaBr
The rule of the universe that requires us to balance equations.
The Law of Conservation of Mass
Always forms CO2 and H2O
What is a Combustion reaction?
__ C8H18 + __ O2 → __ H2O + __ CO2
What are the coeffects in the balanced reaction
2, 25 ,18, 16
Magnesium carbonate solution plus aqueous hydrochloric acid (HCl) yields magnesium chloride solution plus liquid water and carbon dioxide gas.
MgCO3(aq) + 2HCl(aq) --> MgCl2(aq) + H2O(l) + CO2(g)
____ AlI3 + ____ Cl2 →
what are the products?
AlCl3 + I2
Numbers used to designate the number of atoms or molecules in an element or compound are called _____.
subscripts
- not to be changed once formulas are balanced