1. pH Scale
Let’s get pHunky
brothers and sisters!
Let’s get pHunky

2. You may know…
Chemists measure how acidic or basic a substance is with…
The pH scale
Acid and base strength is
measured on a scale that ranges
from 0 to 14
Neutral solutions have a pH = 7
Acidic solutions have a ph < 7
Basic solutions have a pH > 7
I’m pHeeling it mamma…

3. It’s the pOWER of Hydrogen, phools!
Acids
These substances have extra H+ ions
Below 7 = acid
pH indicates the amount of Hydrogen ions in a solution
It’s the pOWER of Hydrogen, phools!

4. Bases
These solutions have less H+ in the substance (and more OH- ions)
Base is anything > 7
Aka alkaline
Neutral substances= 7

5. pHun with the pH scale
Just remember this brothers and sisters:
ABBA

6. You called? Oh!
Acids Below
Bases Above ?

8. Why is this chemistry important in biology class?
Your body- HOMEOSTASIS!!!!!!!!
Stomach acids help digest food
Blood – pH of about 7 (neutral)
Homeo…what??

9. Why is this chemistry important in biology class?
Environment
Acid rain
Water pollution
Take me to
pHunky town

10. Acid Rain Effects
This is too pHunky,
even for me!

12. Did you get your learn on? Don’t pHreak out, you don’t wanna
pHail this test!