Assertion :The law of conversation of mass apply to the burning a candle. Reason: During the burning of candle, the wax is converted into smoke, gas, soot and melted wax.The mass of these products is same as the melted wax.Both Assertion and Reason are co (2024)

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Assertion :The law of conversation of mass apply to the burning a candle. Reason: During the burning of candle, the wax is converted into smoke, gas, soot and melted wax.The mass of these products is same as the melted wax.Both Assertion and Reason are co? ›

Reason: During the burning of candle, the wax is converted into smoke, gas, soot and melted wax. The mass of these products is same as the melted wax. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

Assertion :The burning of a candle is both a physical and a chemical change. Reason: Burning of candle melts the wax and hence physical state of wax has changed from solid to liquid. Again the wax combines with the atmosphere oxygen and changes to carbon dioxide, heat and light.

Here, the wax has changed from solid to liquid. This is a physical change. The wax near wick of the candle burns and gives new substances like carbon dioxide, carbon soot, water vapour, heat and light. This is a chemical change.

The mass of the candle decreases when it is burnt. This is because some of the wax has reacted to form gas.

Energy can neither be created nor destroyed i.e. the total energy of an isolated system remains constant; however, it transforms from one form to another. The same phenomena applies when we burn a candle, chemical energy of wax is spent and converted to light energy.

In this chemistry demonstration, you'll see the affects of temperature on air pressure. During this experiment, we'll be able to see how burning a candle affects the air temperature, and thus pressure inside a glass container.

The burning of wood is a chemical change as it leads to the formation of new substances like Carbon dioxide gas, water vapour, ash, etc. There are some substances that do not undergo complete combustion or do not react at all, these substances form the fire ash.

During the burning of candle, the wax is converted into smoke, gas, soot and melted wax. The mass of these products is same as the melted wax. Therefore, the law of conservation of mass is obeyed.

The burning of a candle is a chemical change whereas the melting of a candle is a physical change.

A candle is lit - Chemical energy into light and heat energy.

What was the candle experiment in the law of conservation of mass? ›

One of Lavoisier's experiments entailed placing a burning candle inside a sealed glass jar. As the wick burned down and the candle melted, the weight of the jar and its contents remained the same, thereby proving his pioneering theory.

The law of conservation of mass states that matter cannot be created or destroyed in a chemical reaction. For example, when wood burns, the mass of the soot, ashes, and gases equals the original mass of the charcoal and the oxygen when it first reacted.

The law of conservation of mass states that in a chemical reaction mass is neither created nor destroyed. For example, the carbon atom in coal becomes carbon dioxide when it is burned. The carbon atom changes from a solid structure to a gas but its mass does not change.

Answer and Explanation: The wax appears to disappear like a candle burns. The law of conservation of mass is applied to this reaction because wax does not have the ability to just get disappear. This is because of the law of conservation of mass according to which the mass can not be created nor it can be destroyed.

In the candle experiment, Gay-Lussac's Law is used to explain the relationship between the temperature of the gas and the pressure inside the container. When a candle is lit inside a container, it heats the air inside, causing the gas molecules to move faster and collide more frequently with the walls of the container.

The law of conservation of mass states that. “The mass in an isolated system can neither be created nor be destroyed but can be transformed from one form to another”. According to the law of conservation of mass, the mass of the reactants must be equal to the mass of the products for a low energy thermodynamic process.

In the developed world today, candles are used mainly for their aesthetic value and scent, particularly to set a soft, warm, or romantic ambiance, for emergency lighting during electrical power failures, and for religious or ritual purposes.

To do more than one ought to; to overextend oneself: “His doctor said that his illness was brought on by stress and recommended that he stop burning the candle at both ends.”

Observations of the burning candle include the properties of the flame, the wick, and the candle (color, size, smoke, sound, brightness, temperature).

The process of burning (as opposed to evaporating) is a chemical reaction, a chemical change. The wax molecules are undergoing a chemical change; they are changing into different molecules by reacting with a substance in the air.