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The flame changes the form of the wax and the material of the wick into heat, light, and the carbon, and gases given off as smoke.
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Why do candles go out when we put glass jars over them?
The concentration of oxygen in the air in the beaker becomes insufficient for the flame to carry on burning, or the carbon dioxide produced is trapped in the beaker, and the increased concentration causes the flame to be extinguished.
If a beaker full of vinegar and baking soda is tilted over a lit candle with out spilling any liquid solution out then why does the flame go out?
When vinegar and baking soda mix, they react to form an gas called carbon dioxide (CO2) which is heavier than air. The flame needs oxygen (O2) to burn. When the beaker is tilted, it spills the heavy carbon dioxide gas over the flame and suffocates it.
How much heat is released from a candle?
This is a very vague question! How big is your candle? How long will you burn it for? Wax is a hydrocarbon, so in burning it you are breaking C-C bonds and C-H bonds, and forming new bonds in carbon dioxide and water - so you could do a calculation involving bond enthalpy data. But I don't think you meant your question that way. So.. how about this answer: 'Not much'. Things that burn with a yellow flame are not burning very effectively: the yellow flame is carbon particles that didn't get burned, glowing. If you hold a glass over your candle you will be able to collect all that as soot. Things that are burning blue are burning more efficiently and so producing more heat: they are using more oxygen too. If you have a gas boiler in yoru house it is important that the flame is blue not yellow. A yellow flame shows that your boiler is not getting enough oxygen to form carbon dioxide and will instead be producing carbon monoxide, which is poisonous. If you meant how hot is the flame, I'd guess about 600 degrees Celcius. A good roaring Bunsen flame is about 1800 degrees. anyone who knows specifically, please add to this answer!
What is full form of CFC that destroy ozone shield?
Chlorofluorocarbons. This is the full form of CFC that destroy the ozone shield in our atmosphere.
Why are burning candle and rusting nails examples of chemical change?
Burning candles and the rusting of nails are examples of chemical changes owing to the fact that there are chemical reactions occurring and new chemical compounds are being formed as the reaction continues.When a candle burns, the wax and wick of the candle are undergoing combustion and (ideally) being chemically changed into carbon dioxide and water, which are two completely new chemical substances than were present in the candle. In the case of the nail, iron in the steel alloy from which the nail is made is combining with oxygen to form a chemical compound not present in the nail, namely iron oxide.
Whats actually burning on a candle?
the flame of a candle is a reaction of oxygen with carbon to form carbon(iv)oxide and vapour
Why is melting of covered candle a physical change while burning of a candle wick a chemical change?
This is because a candle will change its whole form and stay that way, which is a physical outer change. And a candle wick only burns, it doesn't change it's appearance.
Is a candle flame seen because it is luminious?
A candle flame is seen because the carbon hydrogen bonds in paraffin are being broken and energy is released as photons. The photons activate the photoreceptors in your retina to form an "image", then that image travels to the back of the brain through the optic nerve to be interpreted. The carbon and hydrogen atoms form new bonds with oxygen with their electrons in a lower energy state(as carbon dioxide and water).
Why do candles go out when we put glass jars over them?
The concentration of oxygen in the air in the beaker becomes insufficient for the flame to carry on burning, or the carbon dioxide produced is trapped in the beaker, and the increased concentration causes the flame to be extinguished.
What is the verb form of candle?
To candle, past tense: Candled
What type of energy does a candle have?
Candle wax is a form of chemical energy.
What is the possessive of flame?
The possessive form for the noun flame is flame's.Example: I feel the flame's heat.
When a candle burns in air which change occurs first-physical or chemical?
chemical change occurs first. because first oxygen help in burning and form carbon-di-oxide which is a chemical change
When burning a candle where does the smoke originate?
The wax and the wick burn, but not completely, the unburnt part being mainly carbon n the form of very small particles. These are quite hot and glow white, yellow, and red, and are resonsible for the 'flame' and its colour. After the particles leave the immediate area of the flame they cool down and don't glow any more. They are now the smoke.
What form of energy is being used as a candle burns?
The chemical energy stored in the candle wax.
What form is was the energy originally in candle before it was lit?
Potential energy is in an unlit candle, which is converted to heat energy, once the candle is lit.
If a beaker full of vinegar and baking soda is tilted over a lit candle with out spilling any liquid solution out then why does the flame go out?
When vinegar and baking soda mix, they react to form an gas called carbon dioxide (CO2) which is heavier than air. The flame needs oxygen (O2) to burn. When the beaker is tilted, it spills the heavy carbon dioxide gas over the flame and suffocates it.
