Section 3.2 Changes in Matter
{"Image DocumentName": "Section 3.2 Changes in Matter", "Image ImageDescription": "Key Concepts. A physical change alters the physical properties of a substance without changing its composition. A chemical change, also known as a chemical reaction, involves a change in a substance\u2019s composition. In a chemical reaction, reactants form products. The law of conservation of mass states that mass is neither created nor destroyed during a chemical reaction; it is conserved. massreactants = massproducts. Study Guide 2.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}