Topic study hub
Water
Identify chemical tests to detect water using anhydrous cobalt(II) chloride and anhydrous copper(II) sulfate.
7
Objectives
70
Flashcards
49
Questions
90 min
Study time
CambridgeIGCSEChemistryChemistry of the environment
Choose a revision tool
Start revising Water
Syllabus checklist
What you need to know
7 objective pages available
Water outcomes7 objectives
- Identify chemical tests to detect water using anhydrous cobalt(II) chloride and anhydrous copper(II) sulfate.
- Explain how to assess the purity of water by measuring its melting point and boiling point.
- Clarify why distilled water is preferred in practical chemistry over tap water due to its lower chemical impurity content.
- Recognize that natural water sources may contain various substances such as dissolved oxygen, metal compounds, plastics, sewage, harmful microbes, nitrates from fertilizers, and phosphates from fertilizers and detergents.
- Acknowledge that some substances in water are beneficial, including dissolved oxygen for aquatic life and certain metal compounds that provide essential minerals.
- Identify potentially harmful substances in water, such as toxic metal compounds, plastics that can harm aquatic life, sewage with harmful microbes, and nitrates and phosphates that can lead to water deoxygenation and damage aquatic ecosystems, without needing details on eutrophication.
- Outline the processes involved in treating domestic water supplies, including sedimentation and filtration to eliminate solids, carbon use to remove tastes and odors, and chlorination to eliminate microbes.
Key terms
DescribeExplainState
Exam tips
No exam tips are published for this topic yet.
Common mistakes
No common mistakes are published for this topic yet.
Practice preview
Continue by objective
Objectives are grouped by subtopic so students can jump straight to the exact skill they want to revise.
Related topics