Search Results
Showing results 1 to 14 of 14
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-012.png?itok=WDgWUKCd)
Universal Indicator Rainbow Trout
Source Institutions
In this activity on page 2 of the PDF, learners discover how color changes can help scientists distinguish between acids and bases.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-701.jpg?itok=bLXGDO1W)
Shell Shifts
Source Institutions
Ocean acidification is a big issue due to the amount of carbon dioxide humans release. CO2 in the atmosphere is absorbed into the ocean thus changing its acidity.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-609.gif?itok=CxuI6e-9)
Fruity Electricity
Source Institutions
In this activity, Frankenstein's lab is running out of electricity! Learners use fruit to help Igor find a temporary source of energy to turn on a light.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-259.jpg?itok=_k42hDjH)
Color Changes with Acids and Bases
Source Institutions
Learners mix a variety of substances with red cabbage juice. The juice changes color to indicate whether each substance is an acid or a base.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-266.jpg?itok=WxCHpM2j)
Change in Temperature: Endothermic Reaction
Source Institutions
Learners investigate signs of a chemical reaction when they mix vinegar and baking soda. In addition to a gas being produced, learners also notice the temperature decreases.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-258.jpg?itok=HxoXYD_p)
Neutralizing Acids and Bases
Source Institutions
Learners use their knowledge of color changes with red cabbage indicator to neutralize an acidic solution with a base and then neutralize a basic solution with an acid.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-024.png?itok=q0n0tI-g)
New Sense about Cents
Source Institutions
In this activity on page 6 of the PDF (Chemistry—It’s Elemental), learners explore some of the properties of copper using a few common household ingredients.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-235.jpg?itok=APMqQFfs)
pH Scale
Source Institutions
In this online interactive simulation, learners will test the pH of liquids like coffee, spit, and soap to determine whether each is acidic, basic, or neutral.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-976.png?itok=sLSbJoNT)
Finding Colors
Source Institutions
In this chemistry challenge, learners combine acids and bases in a universal indicator to create five different colors.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-149.jpg?itok=aVXlYvt5)
Breathing Blue
Source Institutions
In this activity, learners test exhaled breath for carbon dioxide and learn how to use an indicator as a simple way to measure pH.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-003.png?itok=RdYkHSvQ)
Cheese: Behold the Power of Chemistry
Source Institutions
In this activity on page 7 of the PDF (Get Cooking With Chemistry), learners conduct an experiment to get an idea of how cheese is made.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-269.jpg?itok=IMqB7Mrb)
Powder Particulars
Source Institutions
In this introductory activity and demonstration, learners are introduced to the concept that different substances react chemically in characteristic ways.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-962.jpg?itok=bqR2MYNX)
Candy Chemistry
Source Institutions
In this experiment, learners test multiple food items to see if they are an acid or base using an indicator solution created with red cabbage.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-248.jpg?itok=smNAs51a)
Comparing the Amount of Acid in Different Solutions
Source Institutions
In this activity, learners use detergent solution to compare two solutions containing vinegar and cream of tartar.