Skip to content

Course home

Sign up

Atoms and reactions

EasyMediumHard
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137
Question 33

0.850 g of an element X X\,X is reacted with oxygen to form 1.215 g of the oxide X2O3X_2O_3X2​O3​.

What is the element XXX?

A

Sc

B

Cr

C

Fe

D

Co

Markscheme

Atoms and reactions Questions

  1. A Level
  2. /Chemistry
  3. /Atoms and reactions

199 exam-style questions on OCR A A Level Chemistry Atoms and reactions, covering Atomic structure and isotopes, Compounds, formulae and equations, Amount of substance, Acids, and Redox. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank