Because gas will escape into the air, making more dangerous air, so if you light the match with all the gas in the air, a tiny explosion will occur
Opening the air hole on a Bunsen burner allows more air to mix with the gas before it ignites. This increased air flow creates a more oxygen-rich environment, leading to complete combustion of the gas and producing a hotter, bluer flame. Closing the air hole creates a fuel-rich environment, resulting in a cooler, yellower flame.
Before lighting, place the Bunsen burner at least 12 inches in front of any overhead shelving or equipment and be mindful of loose hair or clothing, like your lab coat. Always keep safety equipment, like fire extinguishers and safety blankets, close at hand.
A Bunsen burner is used in aseptic techniques to create a sterile environment by providing a source of heat for sterilizing tools, such as inoculating loops and needles. The flame from the Bunsen burner can be used to sterilize the equipment before and after use to prevent contamination during experiments or procedures.
A lit Bunsen burner should never be left unattended because it poses a fire hazard. If unattended, the flame could accidentally ignite nearby materials or equipment leading to a potential fire or injury. It is important to always remain present when working with a lit Bunsen burner to ensure safety.
You can use a glass rod or a metal spatula to stir the crystal as it melts over a Bunsen burner. Make sure the tool is heat-resistant and clean before using it.
Leaving the air hole open before lighting the Bunsen burner will cause a yellow, sooty flame due to incomplete combustion of gas. This can result in the production of harmful gases and carbon monoxide. It is important to close the air hole to ensure a clean, blue flame and efficient combustion.
Opening the air hole on a Bunsen burner before lighting it can create a flammable gas-air mixture that is highly explosive. This increases the risk of a flashback when the flame ignites, which can cause a sudden, intense flare-up and potential injury. It is important to always light a Bunsen burner with the air hole closed to prevent this dangerous situation.
Opening the air hole in a Bunsen burner allows more air to mix with the gas before combustion, creating a more efficient and hotter flame. This increased supply of oxygen enhances the combustion process, resulting in a higher temperature flame.
We light a match first before turning on the gas for the Bunsen burner to prevent the gas from flowing out and potentially causing a buildup of gas without ignition. Lighting the match first ensures that the flame is present to ignite the gas as soon as it is released.
A Bunsen burner should be stored in a designated area in the laboratory that is clear from any flammable materials or sources of ignition. It is important to keep it in a safe place where it will not be knocked over or damaged.
The nozzle hole in a Bunsen burner is typically located at the base of the burner, where the gas enters. It is usually a small opening that allows the gas to mix with air before being ignited.
So that you don't lose it.
An alcohol burner was used.
lighting comes before thunder because it is the heat of lighting that causes thunder
there should be a knob on the bottom, make sure that it is loose, turn the top of the burner like you are unscrewing it, then turn the gas on, use a striker or fire starter to light it over the top, you should hear the gas moving through it before lighting it
before they opening they see it under tree
i have know idea