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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

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What will happen if didn't turn the air hole to close before lighting the Bunsen burner?

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.


Why it is dangerous to light a Bunsen burner with the air hole open?

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.


Why does opening the air hole in a Bunsen burner make the flame hotter?

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.


Why do we light a match first before turning on the gas for the Bunsen burner?

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.


Where do you store a Bunsen burner?

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.


Where do you find the nozzle hole in Bunsen burner?

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.


Why is it important to save a file from download before opening it?

So that you don't lose it.


What was used before Bunsen burner?

An alcohol burner was used.


How long can lactose-free milk last after opening before it spoils?

Lactose-free milk can last about 7-10 days after opening before it spoils. It is important to store it properly in the refrigerator to maintain its freshness.


Why there is lightning before thunder?

lighting comes before thunder because it is the heat of lighting that causes thunder


Where are the presents kept before opening them?

before they opening they see it under tree


How do you turn on the Bunsen burner?

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