accept contains different gases’ accept or for particles ‘air ‘molecules’ ‘atoms’ air is not a single element or compound helium particles move faster • • is not a single substance’ is not sufficient 1 (L7) ‘air (ii) any one from 1 (L7) (c) (i) B aluminium particles or atoms are closer • 1 (L7) together (ii) C rubber particles or molecules are further • 1 (L7) accept particles ‘rubber (iii) G or molecules have bigger gaps between them’ 1 (L7) 1 (L7) (d) (i) any one from [8] helium particles are smaller •
accept ‘air contains different gases’ • air is not a single element or compound ‘air is not a single substance’ is not sufficient 1 (L7) (c) (i) B 1 (L7) (ii) C 1 (L7) (iii) G 1 (L7) (d) (i) any one from • helium particles are smaller accept ‘molecules’ or ‘atoms’ for particles • helium particles move faster 1 (L7) (ii) any one from • aluminium particles or atoms are closer together • rubber particles or molecules are further accept ‘rubber particles or molecules have bigger gaps between them’ 1 (L7) [8]
sec1_sci_c7p_eq_2nd_61marks_4students.docx