Week 37 – [H+] and pH

The words acid, base, and neutral are all familiar.  By now in your schooling you have probably learned that water is a neutral substance, lemon juice is an acid, and bleach is a base.  You may have been introduced to the pH scale where you learned that water has a pH of 7, while acids have a pH of between 0 and less than 7 and bases have a pH of greater than 7 up to 14.  In fact, the pH of lemon juice is around 2.0, while the pH of bleach is around 12.6.  Lemon juice is a fairly strong acid, while bleach is a strong base.  Your blood has a pH of 7.4, making it slightly basic.

So what exactly makes something an acid or base?  Why are some acids and bases stronger than others?  Click the image below (or just click here) and read all about the relationship between hydrogen ion (H+) concentration and pH.


Next, watch the video below from Mr. Anderson at Bozeman Science:


Finally, complete the pH Concepts Google Form assignment and show what you know about acids, bases, and pH.  When finished, return to Week 37 – Acids and Bases and continue working.

Leave a Reply

Please log in using one of these methods to post your comment:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s