Official AQA GCSE Chemistry Unit 2 24th Janurary NEW SPEC Watch
Elements heavier than iron are produced at the end of a massive star's life cycle and released in a supernova and elements up to iron are produced at the end of a star's life cycle.Elements lighter than iron are produced when the star is stable.Thats how I think it goes.
Candidates should know that elements up to Iron are produced during the stable period of a star. Elements heavier than iron are formed in a supernova.
Sodium loses a electron to get a positive charge
Iodine gains a electron to get a negative charge
Due to separate charges they are attracted to each other (Opposite charges attract)
This involves electrons in the outermost shell
What did you get on the question about the furnace?
BTW is anyone going to make a unofficial mark scheme?
One of the questions was about adding excess water to anhydrous copper sulfate, i said it was exothermic, isn't that correct? Everyone keeps saying it was endothermic and im pretty sure the reaction is exothermic.
You can check what I wrote above but yeah I meant the iodine question, I drew the diagram for Na+1 but not Fe-1 because I was too stupid to think and just draw the other shell >: can I get the 3marks for what I wrote above?
The test was okay today actually, the six mark question was a nice one as all the information was there. Oh and nobody in my school managed to work out the empiracal formula, I got N (1) Cu(3)? Anyone else get that? The first question was quite tricky too...?
Also on the 300J one I got 300J but I also wrote 300J are transfered to the surrounding usually in the form of heat
or something like that I took some of the wording from the answer as it was two marks