1. Honors 9th grade science Holicong middle school Jodi lock
Water Chemistry and pH
Honors 9th grade science
Holicong middle school
Jodi lock

2. pH Percent of dissolved hydrogen Acid or base
Impacts “habitat ability” in water

4. Acids: More H+ ions
Bases: More OH- ions

7. Tomorrow… Each group must bring 1 drink or liquid to test
A small bottle is enough
NOT: Vinegar, Saltwater, Freshwater

8. Begin Ocean Acidification section if time permits
Now…
pH analysis lab
Use VERNIER GRAPHICAL ANALYSIS APP ON DESKTOP
Begin Ocean Acidification section if time permits

9. Warm up…
What is pH?
As a table, complete the “Guiding Question”, “Group Claim” and “Hypothesis”.

10. Begin Ocean Acidification section if time permits
Now…
pH analysis lab
Use VERNIER GRAPHICAL ANALYSIS APP ON DESKTOP
Begin Ocean Acidification section if time permits

11. Salinity…a review
The amount of dissolved solids in a given amount of liquid is called salinity
Measured in ppt (parts per thousand)
For example: 1000 grams of ocean water can be evaporated and leave 35 grams of solids behind

12. Ocean Water Characteristics
Water flows from land into the oceans and bring minerals
At the same time, water is evaporating and leaving the minerals behind

13. Effects of Climate & Movement
Some parts of the ocean are saltier than others
Coastal waters in places with hotter, drier climates typically have higher salinity.

14. Climate and Movement Affect Salinity
Heat increases evaporation rate
Evaporation = Salinity

15. Climate and Movement Affect Salinity
Some parts of the ocean move less than other parts
Slower moving areas of water develop higher salinity
Movement Salinity