Search Results
Showing results 21 to 40 of 48
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-329.gif?itok=ZP1YuTH4)
Cabbage Juice Indicator: Test the pH of household products
Source Institutions
Learners make their own acid-base indicator from red cabbage. They use this indicator to test substances around the house.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-301.jpg?itok=x9pi3r8R)
Shrinkers: Cook up some plastic!
Source Institutions
In this activity (on page 2 of the PDF), learners (with adult help and supervision) investigate how heat affects polystyrene plastic.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-315.png?itok=8cg6hFZy)
Choose Your Ooze
Source Institutions
During this activity, learners will make different versions of "ooze" using varied proportions of detergent and glue.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-688.jpg?itok=28Wj8pQS)
Inner Space
Source Institutions
In this activity, learners discover that there is space between molecules even in a cup "full" of water. They first fill a cup with marbles, and then add sand to fill the gaps between the marbles.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-300.jpg?itok=ilysqQmo)
Invisible Ink
Source Institutions
In this hands-on activity (on page 2 of the PDF), learners experiment with lemon juice and paper to create a message that can only be revealed using chemistry.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-638.jpg?itok=VTA7HTE4)
Big Things Come in Little Packages
Source Institutions
As a group, learners investigate three packages which are all the same size and shape, but have different contents. One is filled with foam, one is filled with wood, and one is filled with metal.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-937.gif?itok=_lw-mQHU)
Tie Dye Painting
Source Institutions
This is an activity exploring color and color mixing.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-303.gif?itok=3-X_7Obk)
Layers of Liquids
Source Institutions
Learners pour equal amounts of coffee, mineral oil, corn syrup, and alcohol into a beaker. The liquids resolve into stacked layers, and learners can infer which liquids are the most and least dense.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-295.jpg?itok=EUCBF12d)
Mystery Writing: Write and develop a secret message
Source Institutions
Learners write an invisible message using lemon juice on a piece of paper. They then develop the message by soaking the paper in a dilute iodine solution.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-892.jpg?itok=fJ-Na2Dd)
Dusting For Fingerprints
Source Institutions
In this activity, learners become detectives and use chemistry to investigate fingerprints.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-096.jpg?itok=L8PXzkZP)
Color Me Blue
Source Institutions
In this activity, learners add dilute bleach solution to water that has been dyed with yellow, blue, and green food color.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-486.gif?itok=Fi781LOw)
Oil and Soap
Source Institutions
Learners investigate the properties of the liquids in two bottles. One contains layers of oil and water, and one contains oil, water, and soap.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-297.jpg?itok=A2WfHkkh)
Spicy Indicator: Use turmeric to test for bases in your home
Source Institutions
This activity uses turmeric, a common spice in curry, as an indicator for acidity and basicity. Turmeric is yellow in acid and neutral substances, but turns bright red with bases.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-385.jpg?itok=Q81yLDIt)
Matter of Degree
Source Institutions
In two separate bags, learners mix water with Epsom salts and detergent.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-387.png?itok=9A9u3cJh)
Reaction: Yes or No?
Source Institutions
In this activity, learners mix ingredients in a plastic bag, and then identify three characteristics of a chemical reaction: production of heat, color change, and production of a gas.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-938.jpg?itok=zV9qJ_9k)
Shadow Puppets
Source Institutions
In this activity, learners explore color, light and shadow by creating their own puppets to hold in front of a light source.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-732.jpg?itok=zz-17kJq)
Good Vibrations
Source Institutions
This lesson (on pages 15-24 of PDF) explores how sound is caused by vibrating objects. It explains that we hear by feeling vibrations passing through the air.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-939.jpg?itok=hQ2cZ1LG)
Heavy or Light
Source Institutions
In this activity, learners explore a scale by comparing objects, which look similar but have different weights. Learners predict and then measure the weights of various objects using a scale.
Penny for Your Thoughts
Source Institutions
In this activity, learners will explore how metals react with each other. They will see these metals change before their eyes as they coat a paperclip with the copper taken from a penny.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-951.jpg?itok=gdkKXOzq)
Fun with Shapes
Source Institutions
In this activity, early learners combine pre-cut recognizable shapes and their own abstract ideas to make representational pictures (e.g. houses, trees, shoes).