I know that this is probably a case of pre-exam results nerves, but could you please answer this in order to put part of my mind at rest.
In the chemistry "how far how fast" exam, there was a question where I had to describe a) homogenous and b) heterogenous catalysts. I put down that a) The reactants and products are in the same phase as the catalyst.
b) The reactants and products are in different phase at the catalyst.
I know that in the actual definition, it only says about the reactants being in the same phase as the catalyst. Does saying reactants AND products mean that I will lose some marks.
It probably works that there are a list of phrases and you get a mark for each correct one so simply saying reactants should do it. They very rarely have another "deduct marks for each of the following" part.
You could just hope that the markers are in skim mode i guess, which from what i hear isn't too far fetched anyway - people at school keep telling stories about people writing things like "if you read this properly I'll give you a free bottle of whiskey" randomly in the middle of their essays and who never hear anything. Then again hearsay never was reliable.
what you said is wrong...but I can recall that you would have only probably lost a couple of marks which contribute 1/3 per cent to your overall A-level grade...