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Cleaning with Dirt
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Learners build a filter from old soda bottles and dirt. They create polluted water, and pour it through their filter to clean it.

Latent Prints
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In this activity, learners examine fingerprints. Learners leave a hidden print on a surface and then make their own print detecting powder from graphite (found in pencils).

Mineral Scavenger Hunt
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In this activity, learners participate in a scavenger hunt, searching for and recognizing minerals and products that contain minerals.

Gas Production: Blow up a balloon!
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In this classic reaction, learners baking soda and vinegar in a soda bottle to produce carbon dioxide (CO2) gas. This gas inflates a balloon.

Kool Colors
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Learners investigate how temperature affects the rate of chemical reactions by observing how steel wool reacts with various types of Kool-Aid solutions at different temperatures.

Odors Aloft
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Learners smell balloons filled with different scents to guess what's inside. From this, they infer the presence and motion of scented molecules.

Density Rainbow
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In this activity, learners mix several sugar solutions to investigate the property of density. Each sugar solution has a different density and color of the rainbow.

Color Me Blue
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In this activity, learners add dilute bleach solution to water that has been dyed with yellow, blue, and green food color.

Of Cabbages and Kings
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This lesson gives full instructions for making cabbage juice indicator, a procedure sheet for learners to record observations as they use the indicator to test materials, and extension activities to d
Penny for Your Thoughts
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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.

Matter of Degree
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In two separate bags, learners mix water with Epsom salts and detergent.

Reaction: Yes or No?
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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.

Lost Labels
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In this experiment, learners will conduct chemical and physical tests to identify mystery substances.

Inner Space
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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.

Plastic Milk: You can make plastic from milk
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In this activity (on page 2 of the PDF), learners make a plastic protein polymer from milk. Adding vinegar to milk causes the protein casein to solidify or curdle.

Cloudy Globs: Can You Make a White Gel From Two Clear Liquids?
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Using household materials, learners can make white gooey globs from clear solutions. Alum, dissolved in water, reacts with the hydroxide in ammonia to create aluminum hydroxide.

Cabbage Juice Indicator: Test the pH of household products
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Learners make their own acid-base indicator from red cabbage. They use this indicator to test substances around the house.

Choose Your Ooze
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During this activity, learners will make different versions of "ooze" using varied proportions of detergent and glue.

Pollution Diffusion
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Learners design their own experiment to investigate how pollution diffuses through ground material.

Salting Out
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In this activity, learners create a mixture of water, alcohol and permanent marker ink, and then add salt to form a colored alcohol layer on top of a colorless water layer.