All substances have properties. These describe how a substance looks and behaves. There are two types of properties: physical and chemical. Watch this video about how physical and chemical properties ...
Synthetic materials are made from natural resources. Synthetic materials are made by chemically changing the starting substances to create a material with different characteristics. Some examples of ...
Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...
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