Year 10 Chemical Reactions

Magnesium reacting with oxygen:

Method: 
We held a strip of magnesium metal in the hottest part of a bunsen burner flame till it caught fire. 
We didn't look directly at the reaction because the light produced was so bright that it would affect the retina
Observations:
The magnesium metal was a shiny, grey and bendy substance
The magnesium burned with a bright, blinding white light
After it burned the substance was then magnesium oxide and was a white powdery substance



 

Word Equation
Magnesium + Oxygen - Magnesium Oxide

Balanced Equation
2Mg + O2 = 2Mgo

Iron filings reacting with sulphur:

Method: 
We mixed equal amounts of iron filings and sulphur then used a magnet wrapped in paper to separate them. 
We mixed them again and added the mixture to a test tube and heated strongly.
Observations:
The iron filings were black and flakey
The sulphur was a faded neon yellow colour. It was powdery
When we heated the tube a rotten egg smell was produced, the iron and sulphur were also fusing together
After the reaction the substance produced was a clump of black powder.



Word Equation
Iron + Sulphur - Iron Sulfide
Balanced Equation
Fe + S = Fes