GCSE / O Levels Chemistry

A purple pill is placed in a beaker of water. The beaker is left for several hours.
The diagram shows the appearance of the water when the pill is added and several hours later.
several
hours
water-
- pale purple
solution
purple
pill
Which statement explains why this change occurs?
A Diffusion occurs because the pill is coloured.
B Diffusion occurs faster at higher temperatures.
C Diffusion occurs from an area of high concentration to one of lower concentration.
D Gases diffuse faster than liquids.


Diffusion | 2017 - O/N - 5070/11 | Q1