How do you waft chemicals?
If you need to smell the odor of a chemical, waft or fan the fumes toward your nose with one hand. Do not put your nose over the container and inhale the fumes. 5. Never pour water into a concentrated acid.
When should you waft a chemical?
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.
What is the scientific term for smelling chemicals?
Phantosmia is the medical word used by doctors when a person smells something that is not actually there. Phantosmia is also called a phantom smell or an olfactory hallucination. The smells vary from person to person but are usually unpleasant, such as burnt toast, metallic, or chemical smells.
What type of word is waft?
waft used as a noun: a light breeze. something (a scent or odor), such as a perfume, that is carried through the air. a flag, (also called a waif or wheft), used to indicate wind direction or, with a knot tied in the center, as a signal.
Which is correct lab safety?
Never smell, inhale or taste laboratory chemicals. Always wash hands and arms with soap and water after removing gloves and before leaving the work area. Never eat, drink, chew gum or tobacco, smoke or apply cosmetics in the laboratory. Do not pick up broken glass with your hands.
Do you need to shake a lab thermometer?
Do you need to shake down the lab thermometers? * No, do NOT shake the lab thermometers. They do not need to be shaken, and you might break them.
Why is lab safety important?
Lab safety is important because it keeps people from getting severely injured. Proper lab rules are important because they keep people from getting hurt. Lab safety is rules that are used in every lab to keep everyone safe. If you do not follow the lab safety rules then you could get hurt.
What does waft mean in chemistry?
In chemistry and other sciences, it is a term of laboratory safety. In “wafting” a person takes an open hand with the palm towards the body and moves their hand over the substance in a gentle circular motion so as to lift vapors of the substance towards the nose.
What does waft mean in science terms?
Does waft mean?
: to move or go lightly on or as if on a buoyant medium heavenly aromas wafted from the kitchen. transitive verb. : to cause to move or go lightly by or as if by the impulse of wind or waves. waft.
When do you use the word waft in chemistry?
Waft The term is commonly used to describe scents that have diffused into other parts of a room, or to describe smoke as being seen moving through the air. In chemistry and other sciences, it is a term of laboratory safety.
What should you wear in a chemistry lab?
Tie long hair back. Wear safety goggles and a lab coat. Even if you aren’t clumsy, someone else in the lab probably is. If you take even a few chemistry courses you will probably see people set themselves on fire, spill acid on themselves, others, or notes, splash themselves in the eye, etc. Don’t be the bad example to others.
What kind of heat does a chemistry lab use?
All well-equipped chemistry labs have sources of heat like a Bunsen burner or electric heating coil, in order to complete various chemical experiments. These heat sources are often the source of accidents in the lab, ranging from minor burns from handling hot glassware to clothing or hair accidentally set on fire from a Bunsen burner.
How to be safe when using a chemistry lab?
Move slowly and deliberately in the lab to avoid breaking glass and causing cuts or other damage. If you break glassware in the lab on accident, be careful while disposing of it; the shards are sharp and may cut you, even through protective gloves. Never use beakers or burners that are damaged in any way.