Chemistry 5-15-12 Intro to pH

CHEMISTRY: Wow! Can you believe it? The laaaaaaaaaaaassst official chemical lesson of the year! Nope, I can’t believe it!

Great intro to the properties of acids and bases. You did a great job on figuring out pH. Acids mean H30+ ions and pH, bases mean OH- ions and pOH. Get the pH of an acid straight from the concentration of the acid. Get the pH of a base by first finding the pOH straight from the concentration of the base and then subtracting that from 14. No problem!! So how do you think someone would use pH?

Don’t forget about learning those indicator colors I told you about. Can you think of anything else that might be a natural indicator? What about tea? Have you noticed how it changes to a lighter shade when you add lemon? Speaking of hydrangeas, here’s one from my back yard. Kind of out of focus, but can you spot the “visitor” in the right corner?

Hon Chemistry 5-14-12 Intro to pH

HON CHEMISTRY: Great job with pH today. What did you think about the indicators? Can you think of anything that changes color in the presence of an acid or base? What about tea? Have you noticed how it changes to a lighter shade when you add lemon?

Acids mean H30+ ions and pH, bases mean OH- ions pOH. Get the pH of an acid straight from the concentration of the acid. Get the pH of a base by first finding the pOH straight from the concentration of the base and then subtracting that from 14. No problem!! So how do you think someone would use pH? By the way, don’t forget to go back and make sure you are clear on the properties of acids and bases and some of the uses of them.


flickr photo by psyberartist

Chemistry Memorization & Chemical Formulas Quiz Thursday

Hey guys! How’s the studying going? Nicholas has uploaded everything you have to memorize for this chapter into one quizlet. Thanks, Nicholas!!