Chemistry OCR Gateway - C1 Notes


Chemistry C1 Topic Notes                      Ash Shashidaran



Solids – Lattice arrangement, strong forces of attraction

Liquids – some form of attraction, no definite shape 

Gas – no force of attraction, more in a random motion, more heat the faster they move 


Physical change – melting, boiling and condensing 

Chemical change – bonds between atoms break and atoms change places 


History of the Atom 


JJ Thomson – Plum pudding model (positively charged (pudding), negatively charged electrons (plums))

Rutherford, Geiger and Marsden – Gold foil experiment (alpha particles at a


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