Combined Science Past Papers are below with Mark Schemes -  Biology , Chemistry and Physics  -  Papers 1 &  2

If you need additional past papers they are available here 

Biology Paper 1

Biology Paper 2

Chemistry Paper 1

Chemistry Paper 2

Physics Paper 1

Physics Paper 2

Biology Paper 1 Mark Scheme

Biology Paper 2 Mark Scheme

Chemistry Paper 1 Mark Scheme

Chemistry Paper 2 Mark Scheme

Physics Paper 1 Mark Scheme

Physics Paper 2 Mark Scheme