Helium is used to inflate meteorological research balloons that carry measuring instruments into the upper atmosphere.
State one property of helium, apart from it being chemically inert, that makes it suitable for this application.
Practise Edexcel GCSE Chemistry Group 0 with exam-style questions for Foundation and Higher tier. 30 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.