Water - Water Treatment
Authored by Conor Eivers
Chemistry
9th - 12th Grade
NGSS covered
Used 34+ times
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15 questions
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1.
REORDER QUESTION
1 min • 1 pt
Reorder the following in order of the stages of water treatment.
Flocculation
Sedimentation
Filtration
Chlorination
Screening
Tags
NGSS.HS-ESS3-4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Flocculation is ...
The coming together (coagulating) of small suspended particles in water.
The coming together (coagulating) of large suspended particles in water.
The coming together (coagulating) of large dissolved particles in water.
The coming together (coagulating) of small dissolved particles in water.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is H2SO4 sometimes added to water in water treatment?
↓ pH
Softens H2O
↑ pH
Sterilises H2O
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is aluminium sulphate sometimes added to water in water treatment?
↓ pH
Flocculation
↑ pH
Sterilises H2O
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is chlorine sometimes added to water in water treatment?
↓ pH
Flocculation
↑ pH
Sterilises H2O
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is fluorine sometimes added to water in water treatment?
↓ pH
Flocculation
↑ pH
↓ teeth decay
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is calcium hydroxide sometimes added to water in water treatment?
↓ pH
Flocculation
↑ pH
↓ teeth decay
Tags
NGSS.HS-PS1-4
NGSS.HS-PS1-5
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