You could get told off by the teacher.
More important than that, often chemistry labs involve chemical fumes which shouldn't be inhaled. Chewing Gum opens the mouth and takes in much more chemicals than is necessary.
not pemitted in the lab
Kitchen laboratory conduct and responsibility are no different than what you would find in a home kitchen or garage. It is the responsibility of the person working in the laboratory to wear appropriate clothing, refrain from eating, drinking, or gum chewing while in the lab, and always pay attention to their surroundings.
laboratory toxins can enter the body through food or liquid
Catching and killing prey, then eating and chewing this prey and for drinking water.
Eating, drinking, or playing in the lab can make a mess on your work space, and get you hurt.
Writing with a pencil, chewing food, walking, bending over, hopping, eating and drinking . . . well, you get the idea!
try drinking a lot of water or chewing gum some people pinch their inner thigh to remember why they shouldn't be snacking
Because if your using chemicals it could get on your food and you eat it and BOOM! your on the floor dead just like that!
The only way to be absolutely certain that you will not accidentally consume something dangerous in the lab is to not consume anything at all.
Things that you can do to prevent burping include eating and drinking slowly, avoid carbonated drinks, avoid chewing gum and eating hard candies that might cause you to swallow more than necessary.
Chemicals in the lab might contaminate the food - causing poisoning. The food might contaminate an experiment - making the results invalid.
This has to be the most ridiculous question EVER.
Eating biscuit without chewing well does not have any effect because the saliva will melt it.