Checking progress account…
Opening your study space…
Lesson
Water may be soft or hard depending on dissolved salts. Water pollution reduces water quality and harms living systems unless it is controlled.
Learning objectives
Explain Hardness and Pollution of Water using correct Grade 9 Chemistry terms.
Use observation, formula, symbol, or equation as evidence.
Connect the evidence to the exact chemical conclusion or classification.
Lesson
Ready to check what you remember?
Continue to revisionStudy path
Notes
Review the compact notes before moving into recall.
Open notesShowing 4 of 5 notes.
Diagrams
Practice
Choose one small set. The full bank opens only inside the practice session.
In this chapter
Now on Hardness and Pollution of Water. Next up: Gas Laws Basics.
Lesson progress
Save this lesson when done. Next: Gas Laws Basics.
Keep moving