1. You be an engineer presentation
1. A scientist places 10 mL of water in a test tube and heats the liquid ?over a Bunsen burner for 2 minutes. The liquid boils and escapes as ?steam. This experiment is a good example of
A. a chemical change involving phase changes
B. a physical change involving phase changes
C. a chemical change involving chemical reactions
D. a physical change involving chemical reactions
2. List three Physical properties of materials and three Chemical ?properties of materials.