1. Predicting Chemical Reactions
Take 2

2. Review of Balancing Equations
Remember:
Save H and O till the very end.
You can use fractions as coefficients to begin with, but your answers must be in the LOWEST whole coefficients.
___ MgI2 + ___ Mn(SO3) ___ MgSO3 + ___ MnI4

3. Review in video for if you like...

5. Element + Element ➔ Compound
Synthesis Reactions
A + B → AB
Element + Element ➔ Compound
Two elements combine
Steps to Predict Product:
Ignore the subscript numbers and write the ion for each element (or polyatomic ion)
Balance the ion charges and combine
Write states of matter
Balance the new chemical equation
Ex. __ Al + __ S8 ➔
Ex. __ K + __ Cl2 ➔

6. Decomposition Reaction
AB → A + B
Compound ➔ Element + Element
Starts with One reactant only
Step to Predict Products:
Write each element (or polyatomic ion) individually with a + between them
Check for polyatomic molecules and add appropriate subscript
Write states of matter
Balance the new chemical equation
Ex. NI3➔
Ex. Ag2O➔

7. Element + Compound ➔ Element + Compound
Single Replacement
Where A is a Metal:
A BC → AC + B
Where A is a Non-Metal:
A BC → BA + C
Element + Compound ➔ Element + Compound
Starts with One element and One compound
Can include polyatomic ions

8. Single Replacement Steps to Predict Products:
Determine if the element by itself is a metal or non-metal
Switch and Combine
If the element is a metal need to switch with metal in compound
Ignore the subscript numbers and write the ion for each element (or polyatomic ion) being combined
Balance ion charges and combine
If the element is a non-metal need to switch with non-metal in compound
Write products as new compound + element
Write states of matter
Balance the new chemical equation

9. Single Replacement Examples
K + MgBr ➔
Zn + SnCl2 ➔
NaCl + F2 ➔
AgNO3 + Cu ➔

10. Double Replacement AB + CD → AD + CB Two Compounds react
Metals and Non-metals Switch Partners
Can include Polyatomic ions
Steps to Predict Products:
Determine what the new pairs will be
For each new compound:
Ignore the subscript numbers and write the ion for each element (or polyatomic ion) being combined
Balance ion charges and combine
Write the products as new compound + new compound
Write states of matter
Balance new chemical equation

11. Double Replacement Examples
AgNO3 + HCl ➔
Pb(NO3)2 + K2CrO4 ➔
NaBr + CaF2 ➔
FeCl3 + NaOH ➔

12. tables are used to determine the solubility of ionic compounds (see p
tables are used to determine the solubility of ionic compounds (see p.57 and your data sheet)
sometimes a solid, called a precipitate, will form when two ionic solutions are mixed

13. CxHy + O2(g) → CO2(g) + H2O(g)
Combustion
CxHy + O2(g) → CO2(g) + H2O(g)
Compound or Element + Oxygen ➔Carbon dioxide + Water
Exothermic
Start with an organic compound (has C and H) and oxygen
Steps to Predict Products:
Write CO2(g) + H2O(g) as the products
Balance the new chemical equation
Ex. CH4 + O2 ➔
Ex. C3H8 + O2 ➔

14. Acid + Base ➔ salt + water
Neutralization
HX + MOH ➔ MX + H2O
Acid + Base ➔ salt + water
Starts with an acid and a base
Can include polyatomic ions
Steps to Predict Products:
Take the positive ion from the base and the negative ion from the acid
Ignore the subscript numbers and write the ion for each element (or polyatomic ion)
Balance ion charges and combine
Write the products as new compound + water
Write states of matter
Balance new chemical equation

15. Neutralization Examples
Pb(OH)2 + HCl ➔
NaOH + H2CO3 ➔
HNO3 + LiOH ➔
Ca(OH)2 + H2CO3 ➔

16. Identify the Type of Reaction
2RbNO3 + BeF2➔ Be(NO3)2 + 2RbF
C6H12 + 9O2 ➔6CO2 + 6H2O
P4 + 3O2 ➔ 2P2O3
Pb + FeSO4➔ PbSO4 + Fe

17. Identify and Predict the Product for each Reaction
Mg(OH)2 + HCl ➔
CaCO3 ➔
H2 + AgNO3 ➔
Fe + O2 ➔
BaCl2   +   AgNO3 ➔
C4H10  +  O2 ➔