Khmer
On March 22, 2022, teacher Sotheavy Ry led grade 9A students of American Intercon School, Phsar Thmey Campus to conduct a Chemistry experiment on “Oxygen Action”. At the beginning of the experiment, the teacher showed as well as described the experimental materials such as: glass, oxygen aqueous oxygen, carrots, yeast, bread, rubber, plastic bags, incense, and lighter. It should also be stated that the purposes of the experiment are to:
• Produces oxygen from aqueous oxygen solution (H2O2)
• Identify the reaction entity
• Write the equation from the reaction.
