you probably would get the mark, although they asked what REACTION had occured and it was a precipitation reaction, the precicpitate is a product of a precipitation reaction
the idea of the (pathetically stupid year 3 project) that involves blowing up the balloon, is supposed to represent the different galaxies moving away from each other as with in an expanding universe
Yeah its KOH for potassium hydroxide, i put KHO :angryfire:
Also for the people that think that the balloon question is red shift, its in the science focus textbook, its GALAXIES moviing apart and is the BIG BANG theory. Red shift if part of the DOPPLER EFFECT like blue shift and hence is not...