Spot the one that does not fit

Exercise and reference answers

Questions

1. Items

   1. Ice melting
   2. Magnesium burning
   3. Sulphur burning
   4. Methane burning

   Odd item

   Ice melting

2. Items

   1. Adding oxygen
   2. Removing hydrogen
   3. Classical view
   4. Electron count

   Odd item

   Electron count

3. Items

   1. Three states
   2. Intermediate start
   3. Both ways at once
   4. Single state

   Odd item

   Single state

4. Items

   1. Physical
   2. Biological
   3. Redox phenomena
   4. Imaginary

   Odd item

   Imaginary

Instructions

Tap the item that does not belong with the rest.

Explanation