Determine how to Balance pH

• If the pH is too high (too basic) what could you add to balance or neutralize the pH??

• What if the pH is too low (too acidic)?

HOMEWORK: (Due Thursday)

Bring in a liquid or a substance that can be dissolved in water for us to test the pH.

Predict the pH for your substance and explain.

VocabularyCopy the definitions below into your vocabulary section.

(*Purple part goes in 3rd box)

pH: potential of hydrogen

Acids: A substance that contains many hydrogen ions, a pH lower than 7.0.

Bases: A substance that contains many hydroxyl groups, has a pH higher than 7.0

Hydroxyl Groups: An oxygen atom combined with a hydrogen atom, also called hydroxide ions

pH Indicators: Indicates the pH of a substance by turning a different color for each pH. Examples: litmus paper, cabbage juice, electronic test meters.

GO ON

• The pH Scale

• Acids & Bases BrainPOP | pH Scale

Alien Juice Bar Activity: Follow the directions on the

worksheet…

Click here to begin:http://www.lawrencehallofscience.org/kidsite/portfolio/alien-juice-bar/

pH WebQuest Review

• BBC - KS3 Bitesize Science - Acids, bases and metals : Activity

• BBC - KS3 Bitesize Science - Acids and bases and metals : Test

• BBC - KS3 Bitesize: Science - pH experiment

Finish these websites (IN ORDER).

Sound off, subtitles on

GO ON

Fill-in-the-Blank• Complete the “Acids & Alkalis in Our Daily Lives”

worksheet (On back of BrainPop Activity worksheet) as you fill-in-the-blanks at the following link:

Acids and Alkalis in Our Daily Lives

• When you’re finished try these fill-in-the-blanks online:– Use of Indicators– Neutralisation– Acids– Strong Acids– Faces of science:: Do You Know Your Bubbles?

(After filling in bubbles, click NEXT one time)

BrainPOP - pH Scale Game

1. Choose “Virtual Labs: pH scale & meter calibration”

2. Work through the interactive “game”3. Click blue back arrow on top left of screen.4. Choose “Virtual Labs: Acidifying Salsa”5. Work through the interactive “game”

Username: eastmiddle1Password: bulldogs

CLICK HERE

Movie: Acids & Bases

• Acids And Bases Movie - Free Educational Movies - The KidsKnowIt Network