1. Water and pH
Unit 2

2. Remember atoms?

3. When atoms come together…
This is water!

4. When water sticks to itself…
It's called cohesion

5. When water sticks to other stuff..
It's called adhesion

6. When water sticks to itself AND something else…
It's called
capillary action!
This happens in
trees!

7. Water has different states…
Liquid
Solid
Gas

8. When water is mixed with stuff…
An solution is made of solvent (liquid) and solute (solid)
Solvent
Solute

9. pH scale
Basic pH

10. Buffering What do we add to get the pH to 7? ph= 2 ph= 11 ph= 4
A buffer is used to bring the pH back to neutral (7)
If you have something too acidic, add base
If you have something too basic, add acid
What do we
add to get
the pH to 7?
ph= 2
ph= 11
ph= 4