
Overview
Bill Nye is going through a phase - a phase of matter. Check out the ""Phases of Matter"" episode to find out about rock-solid solids, liquidy liquids, and gassy gases. It's phase-tastic! Everything around us is made of stuff called matter, and all matter is made of atoms. Matter is anything that comes in three varieties, what scientists call phases. There are solids like rocks, cookies, and desks. There are liquids like water, honey, and juice. And there are gases, we breathe air and the helium in balloons. The main difference between the three phases is how fast the matter's atoms move. All atoms move around because they have energy. The more energy that's in something, the faster the atoms move. Atoms in an ice cube don't move very much - they're frozen in place. The atoms in liquid water slip and slide around - that's why you can pour it and spill it. Water vapor atoms are moving pretty fast - that's why they float around in air (a mixture of other gasses). Changing
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1 - 1Flight September 10, 1993
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1 - 2Earth's Crust September 17, 1993
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1 - 3Dinosaurs September 24, 1993
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1 - 4Skin October 01, 1993
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1 - 5Buoyancy October 08, 1993
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1 - 6Gravity October 15, 1993
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1 - 7Digestion October 22, 1993
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1 - 8Phases of Matter October 29, 1993
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1 - 9Biodiversity November 05, 1993
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1 - 10Simple Machines November 12, 1993
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1 - 11The Moon November 19, 1993
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1 - 12Sound November 26, 1993
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1 - 13Garbage December 03, 1993
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1 - 14Structures December 10, 1993
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1 - 15Earth's Seasons December 17, 1993
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1 - 16Light & Color December 24, 1993
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1 - 17Cells January 21, 1994
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1 - 18Electricity January 28, 1994
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1 - 19Outer Space February 04, 1994
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1 - 20Eyeball February 11, 1994