If a towel is used to clean up the spill, it should be placed in the fume hood because it may contain or release volatile chemicals. A stain spill will stain anything; therefore gloves should be worn. The towel used to clean up the spill may be disposed of in the normal trash container.

Never wrap a person whose clothes are on fire in a fire blanket, as it can create a chimney effect and cause burns on the person’s body and face. Instead they should roll on the floor to try to put out the fire, or step under a safety shower, if there is one in close proximity.

When a person’s cloths catch fire, you should quickly wrap him in a thick blanket and roll him on the ground so that the oxygen supply get cut of and the fire extinguishes. This will extinguish the fire and prevent further damage to the person. Hope it helps u.

Never return unused chemicals to the reagent bottles. This is a source of possible contamination of the entire contents of the stock bottle. Dispose of unused chemicals exactly as instructed in the waste disposal instructions for that substance, identified by throughout each experiment.

To keep out of chemicals and fire. Why are bottles of chemicals kept tightly closed except when a quantity of chemical is being removed? To not have it spill and also to not have other stuff outside come in to the bottle.

If you spill an acid or base on your skin, immediately wash well with water. Strong bases react with the oils in your skin to produce a soapy feeling layer. Rinse until well after that feeling is gone. Do not attempt to neutralize a spill on your skin.

Answer Expert Verified The main reason is safety! Others could trip or injure themselves or you, if they bump into a open cabinet. If you are in science class and carrying a chemical, you might spill it and have to repeat the experiment.

What are the three main reasons containers of chemicals are kept tightly closed while not dispensing them? 1. Prevent contamination of the chemicals 2. Prevent undesired reactions 3.

When you are in the laboratory and take a direct sniff of the chemicals you are using, you run the risk of damaging your mucous membranes or your lungs. When it is necessary to smell chemicals in the lab, the proper technique is to cup your hand above the container and waft the air toward your face.

The fume hood is often the primary control device for protecting laboratory workers when working with flammable and/or toxic chemicals.

What should you always do at the end of the lab? clean up.