- The student with long hair is not tied back, posing a fire hazard near the Bunsen burner. Hair should be secured in a ponytail or bun.
- The student is holding a test tube directly over the flame without using a test tube holder, risking burns. A test tube holder should be used to grip the tube safely.
- Rick should use a fume hood to contain and vent the fumes from the flask, instead of smelling them directly.
- No, the students are not behaving appropriately. They should wear safety goggles at all times and avoid tasting or smelling chemicals unless specifically instructed by the teacher using proper technique (wafting).
- Evelyn’s technique is correct because she is using a pipette to transfer liquid, which is precise and minimizes spillage and exposure. Kwan is pouring directly from a large container, which increases the risk of spills and accidents.
- Evelyn’s technique is the correct one because it uses appropriate lab equipment (a pipette) for accurate and safe handling of small volumes of chemicals, reducing the risk of contamination and spills.
Parent Tip: Review the logic above to help your child master the concept of lab safety worksheet answers.
