Chemisty and life - Water quality

3 important questions on Chemisty and life - Water quality

How does water occur on earth

In all three phases
1. Water vapour in the air (gas)
2. Surface water and groundwater (liquid)
3. Ice (solid)

What does each step to the right mean on the pH scale

The solution contains ten times as many base particles

When is litmus blue

When the pH is more than 7

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