2. Students are mixing chemicals. Which of the following is a necessary piece of safety equipment during this process?

3. In which of the following investigations would safety gloves be a necessary piece of safety equipment? A. Investigating gravity by rolling cars down a ramp B. Using a mirror and a laser to demonstrate reflection C. Heating a beaker of water on a hot plate D. Measuring the masses of samples of metals

4. Which of the following tools should be used to examine closely the legs of an insect? A. Pan balance B. Spring scale C. Collecting net D. Hand lens

5. Students collected caterpillars and measured them. Ignoring the tentacles, which caterpillar has a body length closest to 10cm?

6. Students were cleaning their classroom with the cleaner in this bottle. It would be safe for the students to use this product to clean all of the following EXCEPT- A. the lab tables in the classroom B. the windows of the classroom C. the classroom chairs that students use D. the habitat of the classroom pet