Go to the cabinet for protective gears and open the cabinet door. Take out and wear a protective coat. Wear protective gloves. Wear a mask. Wear protective goggle and close the cabinet door. Go closer to a desk and check the label on the nitric acid bottle and put the chemical bottle down. Check the chemical information on nitric acid in the MSDS (hazard, risk, name and content of ingredient, physical and chemical property, safety and reactivity) and check the relevant information. You completed the mission. Let’s wrap up what we have learned with a quiz. The required chemical information was not checked properly. Please open the MSDS and check the information again.