Chemical Reactions By: Julia, Leia and Lindsay

Five Types of Reactions

Synthesis- Two reactants combine in order to form a single product. Ex: H2+ O2= H2O

Decomposition- One reactant decomposes into two or more products. Ex: H2O= H2+ O2

Single Replacement- when one element combines with a compound and replaces another element in that reaction. The four types are metal-metal, active metal replacing H from water, active metal replaces H from acid and halide-halide replacement. Ex: Li+ NaCl= LiCl+ Na

Double Replacement- two compounds react and the positive and negative ions switch places. Reaction happens when the following is produced: H2O, a gas and a precipitate (solid). Ex: NaOH+HCl= NaCl+H2O

Combustion- A hydrocarbon reacts with oxygen with the products always forms carbon dioxide, water and energy. Ex: C4H8+ O2= CO2+ H2O

Activity Series with SR

If the element doing the replacing is above the other element then it can be replaced. Ex: Li + MgO= Li2O + Mg

If the element doing the replacing is below the other element then it cannot be replaced. Ex: Mg + Li2O = NR

Solubility Rules

It is soluble if...

  • It is a Nitrate, Acetate, Ammonium, and all Group 1 (A) salts
  • If it is a Chloride, Bromide, or Iodide except if any of those reacts with Silver, Lead, or Mercury
  • If it is a Sulfate except if it reacts with Calcium, Strontium, Barium, Mercury, Lead (II), and Silver.
  • If it is a Fluoride except Group 2, Lead (II), and Iron (III)
  • If it soluble you put (aq) behind the compound. Aq stands for aqueous.

Insoluble if...

  • If it is a Carbonate or Phosphates except for Group 1 and Ammonium
  • If if it a Hydroxide except Group 1, Strontium, Barium, and Ammonium
  • If it is a Sulfide except Group 1, 2, and Ammonium
  • If it is an Oxide except Group 1
  • If it is insoluble you put (s) behind the compound. S stands for solid.


Created with images by bdyczewski - "laboratory chemistry subjects" • dullhunk - "An Astronomer's View of the Periodic Table"

Report Abuse

If you feel that this video content violates the Adobe Terms of Use, you may report this content by filling out this quick form.

To report a Copyright Violation, please follow Section 17 in the Terms of Use.