A: CF2Cl2
Oracle Prep sorts past-paper questions by topic, so you can drill Chemistry of the Environment and see which topics are most likely to come up next.
Sign up free →Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content
Ozone molecules are continually being broken down and formed in the upper atmosphere.
Which pollutant causes eutrophication in rivers?
The diagram shows a flow chart for the manufacture of fertiliser. In the flow chart, what are W, X, Y and Z?
Which pair of elements, when combined together, do not form a covalent compound?
The diagram shows the structure of a covalent compound containing the element hydrogen, H, and the unknown elements X…
A metal consists of a lattice of positive ions in a 'sea of electrons'. What changes, if any, take place to the elect…