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MARK SCHEME

KINGDOM OF BAHRAIN
QUALITY ASSURANCE AUTHORITY for
EDUCATION and TRAINING

National Examinations Unit

Grade 9 National Examinations

May 2010

SCIENCE

Paper 2




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BH/SCI9/2                          ©

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National Examinations 2010 Science, grade 9, paper 2 ms

  • 1. MARK SCHEME KINGDOM OF BAHRAIN QUALITY ASSURANCE AUTHORITY for EDUCATION and TRAINING National Examinations Unit Grade 9 National Examinations May 2010 SCIENCE Paper 2 . . . . BH/SCI9/2 ©
  • 2. / ( ) / / ( ) : ( ) ( ) ( ) : ( ) ( ) ( )( ) ( ) ( ) ( ) ( ) ( ) . ( ) /( ) / ( ) / : : / /( ) / / / / / / : / / / / / / ( ) BH/SCI9/2 ©
  • 3. : / / / ( ) ( ) ( ) / . = . . / ( ) / ( ) ( ) / ( ) ( ) / ( ) ( ) / ( ) : ( )( ) : BH/SCI9/2 ©
  • 4. / ( ) : ( ) ( ) / / : ( ) ( ) ( ) / ( ) : () ( ) ( ) ( ) BH/SCI9/2 ©
  • 5. ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) : ( ) ( ) ( ) ( ) : ( ) ( ) ( ) ( ) / / / / ( ) / / BH/SCI9/2 ©
  • 6. / / ( ) BB Bb Bb ( ) ( ) : / () / DNA / / ( ) ١ ٢ ٣ ٤ ٥ ٦ BH/SCI9/2 ©
  • 7. ( ) : ( ) ( ) / : ( ) 2O2- → O2 + 4e : ( ) Al3+ + 3e– → Al : ( ) () ( ) ( ) ( ) ( ) / / ( ) BH/SCI9/2 ©
  • 8. / ( ) / / ( ) / / ( ) / / () ( ) ( ) () ( ) ( ) ( ) ( ) / / ( ) ( ) ( ) , ( = = ) = ( ) × = × () : BH/SCI9/2 ©
  • 9. () ( )( ) ( ) ( ) ( ) × × ( ) ( ° ° ) ° ( ) ( ° ° ) ° ( ) () ( ) × = ( ) × = × × = ÷ = ( ) ÷( × )= ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( )() / ( ) BH/SCI9/2 ©
  • 10. / ( ) :( ) :( ) ( ) . ( ) / / () ( ) BH/SCI9/2 ©