Students examine the effects of heating on various crystals. They answer questions in the observation category which assess their ability to use a variety of senses to observe data in a certain way- a scientific way.
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Convalent Networks, Metallic, and Ionic Crystals
If you've ever wondered why crystals are so strong and hard, Sal does a fine job of explaining, in chemistry terms, why this is so. Crystals are great examples of covalent networks; which are the strongest and hardest substances in the...
9 mins 7th - 10th Science