What is a Solution?
In this solutions worksheet, students read about how people first learned to use metals and to combine metals to form alloys. Students write an essay telling the story of how ancient people first learned to cause physical changes in metal.
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New Review Freezing Point Depression: Why Don’t Oceans Freeze?
Can you go ice fishing in the ocean? Learners examine the freezing point of different saltwater solutions. Each solution has a different concentration of salt. By comparing the freezing points graphically, they make conclusions about...
9th - 12th Science CCSS: Adaptable
Mixtures and Solutions: Paper Chromatography Experiment
Why does some ink bleed through paper, and other ink doesn't? Practice some paper chromatography to separate the colors from a pen with an interactive experiment for middle and high schoolers. Learners use a variety of solutions to track...
7th - 12th Science CCSS: Designed
Flame Test: Red, Green, Blue, Violet?
Let the true colors shine through. Pupils conduct a flame test to identify an unknown element. Class members calculate and prepare specific molarity solutions of three chemicals. Using their observations of the colors emitted, they...
10th - 12th Science CCSS: Designed
Why the Arctic Is Climate Change's Canary in the Coal Mine
What happens in the Arctic doesn't always stay in the Arctic. Follow along with this short video as it investigates how small changes in the temperature of Arctic regions can have dramatic effects on the global climate through a series...
4 mins 7th - 12th Science CCSS: Adaptable