Table of Contents
What causes strike back?
With too little air, the gas mixture will not burn completely and will form tiny carbon particles that are heated to glowing, making the flame luminous. With too much air, the flame may burn inside the burner tube; that is, it may strike back.
How will you prevent a burner from striking back?
Tie back your hair and take off scarves in order to prevent them from catching fire by mistake. Close the gas supply immediately when the flame strikes back because of excess air supply. If the gas burner is not used for some time, set it to luminous flame and reduce the gas flow.
What’s the meaning of Strike Back?
: to try to hurt someone who has hurt one or treated one badly When he called her lazy, she immediately struck back by calling him fat. —often + at He angrily struck back at his critics.
Why are flames green?
Chemicals and Compounds Can Affect Flame Color A green flame, for instance, indicates the presence of copper. As copper heats up, it absorbs energy that’s manifested in the form of a green flame. A pink flame, on the other hand, indicates the presence of lithium chloride.
What precautions should be taken when lighting the Bunsen burner?
Because they produce an open flame, however, certain safety precautions should be taken to minimize the risk of injury when using a Bunsen burner.
- 12 Inches of Clearance.
- Never Leave Flames Unattended.
- Allow to Cool Prior to Handling.
- Inspect Prior to Use.
- Ignite with Sparker.
- Turn Off Gas After Use.
Which color of flame burns the hottest?
white-blue
When all flame colors combine, the color is white-blue which is the hottest. Most fires are the result of a chemical reaction between a fuel and oxygen called combustion.
What type of flame is suitable for heating purposes?
A blue flame colour means complete combustion. This indicates that the gas is being burned efficiently without any unburned and wasted gas. With complete combustion you get the maximum heat output from your gas and use less gas to generate heat with whatever appliance you are using.
What burns in a candle flame?
The combustible material in a candle—or its fuel—is the wax. As the wick burns down the heat of the flame melts the wax around the wick. Because the wick is absorbent it sucks the liquid wax into the wick and upward into the flame. Once the liquid wax gets hot enough, it then turns from a liquid into a gas.