iGCSE Chemistry - Water

**This Powerpoint specifically uses the Cambridge iGCSE Chemistry Syllabus and covers all criteria for – Unit 10.1 Water
**

Students will be able to -

1 Describe chemical tests for the presence of
water using anhydrous cobalt(II) chloride and
anhydrous copper(II) sulfate

2 Describe how to test for the purity of water
using melting point and boiling point

3 Explain that distilled water is used in practical
chemistry rather than tap water because it
contains fewer chemical impurities

4 State that water from natural sources may
contain substances, including:
(a) dissolved oxygen
(b) metal compounds
© plastics
(d) sewage
(e) harmful microbes
(f) nitrates from fertilisers
(g) phosphates from fertilisers and detergents

5 State that some of these substances are
beneficial, including:
(a) dissolved oxygen for aquatic life
(b) some metal compounds provide essential
minerals for life

6 State that some of these substances are
potentially harmful, including:
(a) some metal compounds are toxic
(b) some plastics harm aquatic life
© sewage contains harmful microbes which
cause disease
(d) nitrates and phosphates lead to
deoxygenation of water and damage to
aquatic life
Details of the eutrophication process are not
required

7 Describe the treatment of the domestic water
supply in terms of:
(a) sedimentation and filtration to remove solids
(b) use of carbon to remove tastes and odours
© chlorination to kill microbes

**Every Powerpoint includes learning objectives, a starter and plenary, suitable activities and review questions with mark scheme. We also provide a FREE pdf version of the file so it can easily be printed for students as a handout or uploaded to the school VLE system
**

Bring your Cambridge iGCSE Chemistry lessons to life with our expertly designed teaching resources. Each unit is tailored to the latest syllabus, offering ready-to-use lesson plans, engaging experiments, and visually clear notes that save hours of prep time. Whether you’re new to the course or refining your approach, The Science Shelf gives you everything you need to boost student understanding and exam success — all in one place.