Comparing The Density of Liquids, Solids, And Gases
Students compare the relative densities of different liquids, first by layering them on top of each other, and then by weighing equal amounts of the liquids. They explore the density of air versus the density of water.
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Changing the Density of a Liquid - Adding Salt
Fourth in a set of several little lessons on density, this one compares the density of fresh and salt water. First by demonstration, and then by a hands-on activity, learners find that adding salt increases the density, as is evidenced...
3rd - 8th Science
Energy and the Four States of Matter Solid Liquid Gas and Plasma
There are four states of matter: solid, liquid, gas, and plasma. As this clip describes, the key to changing the states of matter is the addition or subtraction of energy. Learn about molecules, heat, plasma, and the science behind...
4 mins 5th - 8th Science
Study Jams! Solids, Liquids, Gases
Your physical science class learns that there are three states of matter, and that adding or removing heat can cause it to change from one state to another. By the animations, printed information, and discussion between RJ and Zoe, they...
4th - 8th Science CCSS: Adaptable