Hello,
I have looked at previous exam papers for OCR GCSE Chemistry and looked at which topics they have not asked about yet, which may come up in tomorrow's paper. I have compiled a list of my predictions for this years paper. This might help you to focus your revision for today
2019 Predictions:
- How/why the atomic model has changed over time; JJ Thompson, Rutherford and Dalton's experiments (possibly a 4/6 marker)
- Atomic mass/number/electron configuration calculations (These come up every year)
- Moles and Titration calculations (3/4 marker - again these come up every year)
- Carbon nanotubes and their properties (fullerenes, graphene etc - possible 4/6 marker)
- Electrolysis (possible 3/4 marker)
- Endothermic and Exothermic reactions, again possible 3/4 markers on bond breaking/making
- Enthalpy calculations
- Drawing dot and cross diagrams and stating the molecular formula (these come up every year)
Hope that helps!