07/05/2010 (Day 5). WELCOME. http://plkclscmc-timothy.viviti.com/. Chapter 5. The wonderful solvent - WATER. Solvent – 溶劑. A liquid that many substances can dissolve in it. Revision: Impurities (P.55). 3 types of impurities:. - soluble. - insoluble. - micro-organisms.
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
The wonderful solvent - WATER
Solvent – 溶劑
A liquid that many substances can dissolve in it.
3 types of impurities:
3 different methods remove different types of impurities.
Alum makes the solid impurities to settle more quickly.
The solid impurities are trapped in the filter column.
What is the colour of the filtrate?
Is the filtrate safe to drink? Why?
NO~ It is because the filtrate may contain soluble impurities and micro-organisms.
1. Boiling, 2. Condensation
It changes from liquid to steam.
Steam changes to water.
The distillate is colourless.
It is water.