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Three A-Level chemistry programs for use as a study aid in group or individual atmosphere. Elements give a property or associative term of the element. To help you guess the identity, you may ask questions from a set of 11. It gives you a score sheet at the end. Good fun to do. However, there is a bug. If you are unable to guess the identity, escaping and pressing C should give you the answer. Unfortunately it does not.

Inorganic is much the same as the first, this time dealing with inorganic compounds. Tests performed are quite good although by no means fully comprehensive. Another bug - if level 1 'Easy' grouping is chosen, compounds from other levels may appear.

Organic, the last program, is in the same vein. This time the computer chooses an organic compound which only contains one functional group. No clues are given so therefore tests must be performed. Having guessed correctly, a short percentage composition is given on the structure of the group.

The cassette comes with a booklet with a well documented teachers' and students' notes pull-out sheet.

K.L.