Tap the one that does not belong

Exercise and reference answers

Questions

1. Items

   1. Copper
   2. Zinc
   3. Sulfur
   4. Gold

   Odd item

   Sulfur

2. Items

   1. Melting
   2. Boiling
   3. Freezing
   4. Filtering

   Odd item

   Filtering

3. Items

   1. Molecule
   2. Proton
   3. Neutron
   4. Electron

   Odd item

   Molecule

4. Items

   1. Helium
   2. Chlorine
   3. Neon
   4. Argon

   Odd item

   Chlorine

Instructions

In each row, tap the single item that does not fit with the other three.

Explanation