Search Results
Showing results 561 to 580 of 641
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-429.jpg?itok=Y2iPIc2e)
Conservation of Mass
Source Institutions
This activity was designed for blind learners, but all types of learners can participate to learn about conservation of gas. This is one of the classic experiments using baking soda and vinegar.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-298.jpg?itok=qn-nwFls)
Yeast-Air Balloons
Source Institutions
In this activity, learners make a yeast-air balloon to get a better idea of what yeast can do. Learners discover that the purpose of leaveners like yeast is to produce the gas that makes bread rise.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-031.png?itok=b_4fZEGw)
Cleaning Water with Dirt
Source Institutions
In this activity on page 7 of the PDF (Water in Our World), learners make their own water treatment systems for cleaning water.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-601.png?itok=Og6uAZtW)
Small Habitats
Source Institutions
In this activity, learners build a model of a self-sustaining habitat (growing grass and beans from seeds).
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-025.png?itok=2oSwsZuP)
Testing Vitamin C: Chemistry's Clear Solution
Source Institutions
In this activity on page 8 of the PDF, learners investigate vitamin C. Learners conduct a chemistry experiment to determine if Tang drink mix or orange juice contains more vitamin C.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-174.jpg?itok=u0eWmK3_)
Magic Colored Milk
Source Institutions
In this chemistry activity (page 5 of the PDF), learners will use milk and a few other basic ingredients to create a chemical change to make a color wheel.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-830.jpg?itok=t_8xLZWT)
Forwards and Backwards
Source Institutions
In this activity, learners explore acids and bases by preparing six solutions that combine vinegar and ammonia, ranging from acid (all vinegar) to base (all ammonia).
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-504.jpg?itok=yG8PeTKh)
Production of Hydrogen
Source Institutions
In this chemistry activity, learners use mossy zinc (or a galvanized nail) and hydrochloric acid to generate hydrogen gas and test some of its properties.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-659.jpg?itok=oyaLhCcc)
Sand, Plants and Pants
Source Institutions
In this activity, learners explore how the application of nano-sized particles or coatings can change a bigger material’s properties.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-355.png?itok=vkeo80JL)
Como funciona un extintor
Source Institutions
In this Spanish-language chemistry activity, learners use simple materials to explore how fire extinguishers work to put out fires.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-576.jpg?itok=VoY4sx49)
Soda Geyser
Source Institutions
In this quick activity (page 1 of PDF under SciGirls Activity: Lift Off), learners will use the ever-popular soda geyser experiment to test the reactivity of the various sugar candies or mints.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-856.png?itok=iJuzU5Jf)
Monitoring Amphibians
Source Institutions
In this field study, learners discover how to collect data in the field and how their efforts can help certain animals, specifically, amphibians.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-995.jpg?itok=5WDwc-an)
Recycling Paper
Source Institutions
In this crafty chemistry activity (on page 2 of the PDF), learners make their own paper from used paper they may have otherwise thrown away.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-489.jpg?itok=M3P9BX8D)
Witches' Potion Demonstration
Source Institutions
In this chemistry demonstration, learners will discover that phenolphthalein is an acid/base indicator. One learner will read a poem about four witches making a potion.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-598.png?itok=kMnPpBqE)
Marine Ecosystems
Source Institutions
In the wild, small crustaceans known as brine shrimp live in marine habitats such as saltwater lakes.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-648.jpg?itok=psrjXzWj)
Exploring Size: Scented Solutions
Source Institutions
This is an activity in which learners will find that they can detect differences in concentration better with their nose (smelling) than with their eyes (seeing).
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-573.png?itok=Nc0XmVZy)
Water Treatment
Source Institutions
Water treatment on a large scale enables the supply of clean drinking water to communities.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-012.gif?itok=UdFRSD_c)
Flubber
Source Institutions
Learners experiment with a piece of Silly Putty® by stretching, bouncing, and snapping it. They then create flubber, a similar substance, by mixing diluted glue and a solution of sodium borate.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-036.png?itok=ItoyWSZE)
Exploring Materials: Graphene
Source Institutions
In this activity on page 4 of the PDF, explore the unique molecular structure and conductive nature of graphene. Learners construct a circuit with a battery and LED bulb.