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Why do you pass back and forth in the flame while heating the liquid?
That is to allow even heat distribution. If the object being heated in a flame is held in one position, a "hot spot" will occur and the liquid may start to boil at that spot.
Why do flames appear the wrong color in flame test?
The color in the flame test has to do with the electrons moving from their ground state to their excited state. When the electron tries to move BACK down to the ground state (near the nucleus) it emits energy called a photon, this is how you see the light.
How big is a flame on a natural gas furnace?
The pilot flame is/should be about 1.5" long, the diameter of a pencil. When the burners are going, the gas is shot into the burner manifold, and the gas sent to the burner is designed to go to the back of the heat exchanger. So, in a typical 80,000 input heater, about 14"-18" long.
Why do you think the chemicals have to be heated in the flame first beforen the colored light is emitted?
The heat energy in the flame moves the metal atoms in the chemicals to a higher energy. When they reach the ground state which is there original position they give back their absorbed energy in the form of visible light.
Why alkali metals impart color in Bunsen flame?
when alkali metals are exposed to flame test, the loosely bounde electrons which present in valency shell are excited to higher energy levels, after some time they will come back to ground state by emiiting radiation which falls under visible region gives colour.
The carburetors on inboard mounted gasoline engines must be equipped with an approved back-fire flame arrestor What purpose does having a back-fire flame arrestor play?
To prevent a back-fire which results when unburned exhaust collects in the engine area
What purpose does having a back-fire flame arrestor play?
Internal combustion engines can backfire. In order to prevent flames from the backfire causing a fire on board, an approved backfire flame arrestor must be attached to the air intake with a flame tight connection.
What is the purpose of archive discs and picture CDs?
The main purpose of having archive discs and picture CDs is to have a hard copy back up of the information or data.
Strike back occurs when the flame is observed at the gas spud and the flame turns green. What must one do when strike back occurs?
back up
What is the purpose of SORTS?
The purpose of sorting data is to have everything in its place. That way the data can be easily found and examined without having to go back and forth between sheets.
What is the purpose of a number on the back of a basketball jersey?
The purpose of you having a number on the back AND front of your jersey, is so the officials can see, when you get a foul or a technical of any kind, then that is how they show the people that are taking scores and fouls/coaches can see who did what.
What is the purpose of the recycling codes on plastics?
The purpose of having a recycling code on plastics is so that they can be tracked. Different companies want their plastics back to make more bottles for example.
Why do you see colors in flame tests?
When an atom is in the flame, an electron in the outer shell of that atom receives energy from the flame and jumps up to a higher shell position. This electron then falls back to is original position and in doing so emits a photon of light of a specific energy. You see this light as a color. Atoms from different elements have different numbers of electrons in their electron shells so the photons emitted as these electrons jump back are all of different energy and therefore emit light of a different color. The color of the flame in the flame test therefore helps to identify the element in the flame producing the colored light.
Why should you always return the safety flame back on when you had fineshed with the bunson burner?
because on the none safety flame you get bigger burns, on the safety flame it isn't as strong
Can a flame from a lighter go back in the lighter and blow up?
no
How can you delete file from the back up?
You can not delete files or records from your backup or log files. This would defeat the purpose of having a solid, accountable record history.
What is turned to used to change the type of flame a Bunsen burner produces?
You would turn the collar on a Bunsen Burner so that the holes are exposing the flame to more oxygen to produce a blue flame. Close the holes by turning the collar to turn it back to the yellow (dirty) flame.
