Pages

Wednesday, 19 September 2018

Exchange Reactions



Exchange Reactions

An exchange reaction occurs between compounds that, when written as a molecular equation, appear to involve the exchange of parts between the two reactants. An exchange reaction will occur when ions in solution form insoluble products.

Image result for exchange reaction

Solubility Rules
  1. All nitrates are 
  2. All sodium and potassium compounds are soluble.
  3. All chlorides are soluble except silver chloride and lead chloride.
  4. All sulfates are soluble except barium sulfate, lead sulfate, calcium sulfate.
  5. All carbonates are insoluble except sodium and potassium carbonates.
  6. All hydroxides are insoluble except sodium and potassium hydroxides.

Tuesday, 18 September 2018

Displacement Reactions

Displacement Reactions

In a displacement reaction...
a more reactive metal displaces a less reactive metal.
Image result for Displacement Reaction

The Reactivity Series

More Reactive
K
Na
Li
Ca
Mg
Al
Zn
Fe
Sn
Pb
Cu
Ag
Au
Pt
Less Reactive

eg. Mg + Zn(NO3)2 > Mg(NO3)2 + Zn



Friday, 14 September 2018

Decomposition reactions

What is a Decomposition reaction?

Image result for Decombination reactionsA decomposition reaction is a type of chemical reaction in which a single compound breaks down into two or more elements or new compounds. These reactions often involve an energy source such as heat, light, or electricity that breaks apart the bonds of compounds.


CuCO3(S) + heat = CuO(s) + CO2



VIDEO



Thursday, 13 September 2018

Combination reactions

Magnesium and Oxygen 

combination reaction is a reaction in which two reactants combine to form one product. Oxygen and the halogens are very reactive elements and are likely to undergo combination reactions with other elements.Image result for magnesium chemical reactions

CREATION OF MAGNESIUM OXIDE