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People often think that the reason is because the oxygen gets burned up, creating a vacuum into which the water is sucked, but this is not true. The reason is that the candle heats up the air in the jar, which causes it to expand. The expanding air is pushed through the water at the bottom. Note that at this stage the candle goes out. There is now no flame to heat the air and so it cools down, which makes the air shrink. This is what creates the vacuum that "sucks" the water up.
But the oxygen is burned up, so doesn't that reduce the volume of the gas?
Yes, the oxygen is burned up, but the chemical reaction between the candle wax and the oxygen produces carbon dioxide of roughly equivalent volume.
Does the flame go out because the oxygen gets used up?
Actually no. You can show that not all of the oxygen is used up when a candle burns in a bell jar by putting a mouse in the jar, which will stay alive. In fact the changing dynamics of the gases in the jar (increasing carbon dioxide produced in the combustion of wax, decreasing oxygen as it is used up in the combustion) contrive to prevent adequate oxygen from reaching the flame for the combustion reaction to continue.
What else can I help you with?
How does a candle look like it is burning inside a glass of water?
When a candle is placed inside a glass of water, the water absorbs the heat produced by the flame. This heat causes the water to evaporate and rise above the flame, creating the illusion that the candle is burning inside the water. In reality, the candle is burning above the water level.
What change in the water level occurs when you hold Erlenmeyer flask over a candle in a pan of water?
When you hold an Erlenmeyer flask over a candle in a pan of water, the water inside the flask heats up and expands, causing the water level in the flask to rise. This is due to the expansion of the water molecules as they gain thermal energy from the heat source.
When you put a jar over a burning candle in a tin pan with a little bit of water why does the water rise?
When a jar is placed over a burning candle, the air inside the jar heats up, expands, and escapes through gaps. As the air cools down, the pressure inside the jar decreases, causing the water to rise due to the lower pressure outside the jar pushing it up. This is known as a simple demonstration of Charles's Law, where the volume of a gas is directly proportional to its temperature at a constant pressure.
When you put a jar over a burning candle in a tin pan with a little bit of water why does the water rise to take the place of oxygen burnt why not the carbon dioxide formed?
The water rises to take the place of the oxygen because the burning candle consumes the oxygen in the jar. The carbon dioxide formed is heavier than the air, so it stays closer to the bottom of the jar, while the water rises to fill the space left by the consumed oxygen.
What is the principle used in water candle experiment?
The principle used in the water candle experiment is the concept of capillary action, where the water is drawn up the wick of the candle due to adhesion and cohesion forces. As the flame burns, the heat evaporates the water causing it to rise through the wick and fuel the candle's flame.
How does a candle look like it is burning inside a glass of water?
When a candle is placed inside a glass of water, the water absorbs the heat produced by the flame. This heat causes the water to evaporate and rise above the flame, creating the illusion that the candle is burning inside the water. In reality, the candle is burning above the water level.
What change in the water level occurs when you hold Erlenmeyer flask over a candle in a pan of water?
When you hold an Erlenmeyer flask over a candle in a pan of water, the water inside the flask heats up and expands, causing the water level in the flask to rise. This is due to the expansion of the water molecules as they gain thermal energy from the heat source.
When you put a jar over a burning candle in a tin pan with a little bit of water why does the water rise?
When a jar is placed over a burning candle, the air inside the jar heats up, expands, and escapes through gaps. As the air cools down, the pressure inside the jar decreases, causing the water to rise due to the lower pressure outside the jar pushing it up. This is known as a simple demonstration of Charles's Law, where the volume of a gas is directly proportional to its temperature at a constant pressure.
When you put a jar over a burning candle in a tin pan with a little bit of water why does the water rise to take the place of oxygen burnt why not the carbon dioxide formed?
The water rises to take the place of the oxygen because the burning candle consumes the oxygen in the jar. The carbon dioxide formed is heavier than the air, so it stays closer to the bottom of the jar, while the water rises to fill the space left by the consumed oxygen.
What is the principle used in water candle experiment?
The principle used in the water candle experiment is the concept of capillary action, where the water is drawn up the wick of the candle due to adhesion and cohesion forces. As the flame burns, the heat evaporates the water causing it to rise through the wick and fuel the candle's flame.
Why does the water rise in the candle experiment?
The water rises in the candle experiment because the heat from the candle causes the air inside the container to expand, pushing some of the air out. As the air cools down, it contracts, creating a lower pressure inside the container. This lower pressure causes the water to rise up into the container to equalize the pressure.
Why does the water level rise when a bell jar is on top of a candle?
The candle heats the air inside the bell jar, causing it to expand and push the water level down. When the candle goes out, the air cools and contracts, creating a lower pressure inside the bell jar. This lower pressure causes the water to rise to equalize the pressure inside and outside the bell jar.
Why did the water rise in the beaker When the candle burned out?
The water rose in the beaker because as the candle burned, it consumed oxygen in the air inside the beaker. This created a partial vacuum, causing the water to be pushed up into the beaker due to the air pressure outside.
How can you prove that air is a mixture?
Stand a large beaker full of air upside down over a container filled with lime water which has a lit candle (tea light, night light) floating on its surface. The flame from the candle will burn off the oxygen in the air which will cause the water to rise within the beaker. The water won't rise right up to the top which proves that their are other substances besides Oxygen in the air. And before you say that it is just the Carbon dioxide which has been produced by the burning of Oxygen, that is why Lime water was used. Lime water absorbs Carbon dioxide. So, whatever remains in the beaker is neither Oxygen or Carbon dioxide.
How long can a candle burn under beakers of different sizes?
This delightfully simple experiment may be used to estimate the percentage of oxygen in the air. Assumption is that all the Oxygen is consumed. Mount candle on a small watchglass floating on water, light the candle, and place an inverted beaker over the whole to create a water seal. Measure the rise of the water inside the beaker.
Why does a candle smoke when it's blown out but not while it's burning?
you may not see it but once you blow out the candle, small embers are still inside the wick of the candle and burning. because the embers are so small thriving off the air particles thus creating the smoke you see.Additional answerIt does smoke while burning, if you look closely enough. In fact, if you put a piece of glass or tin above the flame it will become blackened with smoke particles (carbon).
What type of heat energy causes a mobile to turn from a candle burning below it?
The heat energy causing the mobile to turn is due to convection - the process where hot air rises and cooler air falls, creating air currents that move the mobile. In this case, the heat from the candle heats the air, making it rise and creating the movement in the mobile.
