1. Friday 30 September
Take out a half sheet of paper and a pen/pencil for the quiz
Once done with quiz, pick up your Molecules of Life activity sheet you started on Wednesday and complete it
Get out your notes for notes on water!

2. What are some things you already know about water?
Properties of Water!!!
What are some things you already know about water?

3. Properties of water H2O Exhibits cohesion Also exhibits adhesion
2 hydrogen atoms and 1 oxygen atom attached through a special type of covalent bond called a hydrogen bond
What is an H-bond? Glad you asked!!
Exhibits cohesion
when molecules of the same substance attract
This is why water forms drops
Also exhibits adhesion
When molecules of different substance attract
Why you see a dip in the graduated cylinder

5. POLARITY A water molecule is polar because there is an uneven distribution of electrons between the oxygen and hydrogen atoms

6. What do we know so far….? Take one minute to summarize your notes
What have you learned about water?
What further questions do you have?

7. Properties of water Has a pH of 7
pH is a scale which determine how acidic or basic a substance is.
Below 7 = acid ABBA !!!
Above 7 = base
pH indicates the amount of Hydrogen ions in a solution

8. pH Scale

9. Water is so incredibly amazing
Water is so incredibly amazing. Do you have any idea how awesome water is?

10. Homework tonight
Read pages 40-43
Do problems 1-5 on page 43