Class 6 Exam > Class 6 Questions > Burning of candle isa)Neither physical and ch...
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Burning of candle is
- a)Neither physical and chemical change
- b)Chemical change
- c)Both physical and chemical change
- d)Physical change
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
Burning of candle isa)Neither physical and chemical changeb)Chemical c...
In a burning candle, there are both physical and chemical changes. The melting of the solid wax to form liquid wax and the evaporation of liquid wax to form wax vapour are physical changes. The burning of the wax vapour is a chemical change.
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Most Upvoted Answer
Burning of candle isa)Neither physical and chemical changeb)Chemical c...
Burning of a candle is both a physical and chemical change.
Physical Change:
- When a candle is lit, the heat from the flame melts the solid wax near the wick. This is a physical change because the state of the wax changes from solid to liquid, but no new substances are formed.
- The liquid wax then travels up the wick through capillary action. This is also a physical change as it involves the movement of a substance without any chemical reactions.
Chemical Change:
- Once the liquid wax reaches the flame, it undergoes a chemical change called combustion. Combustion is a chemical reaction between a fuel (wax) and an oxidizing agent (oxygen in the air).
- During combustion, the heat from the flame vaporizes the liquid wax, which then reacts with oxygen in the air to produce water vapor (H2O) and carbon dioxide (CO2) gas.
- The chemical reaction can be represented by the equation: Wax + Oxygen → Carbon Dioxide + Water + Heat
- The heat generated during combustion sustains the flame and allows the process to continue.
Overall, the burning of a candle involves both physical and chemical changes. The physical changes include the melting of the wax and the movement of the liquid wax up the wick, while the chemical change is the combustion of the wax, resulting in the production of carbon dioxide, water vapor, and heat.
Physical Change:
- When a candle is lit, the heat from the flame melts the solid wax near the wick. This is a physical change because the state of the wax changes from solid to liquid, but no new substances are formed.
- The liquid wax then travels up the wick through capillary action. This is also a physical change as it involves the movement of a substance without any chemical reactions.
Chemical Change:
- Once the liquid wax reaches the flame, it undergoes a chemical change called combustion. Combustion is a chemical reaction between a fuel (wax) and an oxidizing agent (oxygen in the air).
- During combustion, the heat from the flame vaporizes the liquid wax, which then reacts with oxygen in the air to produce water vapor (H2O) and carbon dioxide (CO2) gas.
- The chemical reaction can be represented by the equation: Wax + Oxygen → Carbon Dioxide + Water + Heat
- The heat generated during combustion sustains the flame and allows the process to continue.
Overall, the burning of a candle involves both physical and chemical changes. The physical changes include the melting of the wax and the movement of the liquid wax up the wick, while the chemical change is the combustion of the wax, resulting in the production of carbon dioxide, water vapor, and heat.
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Community Answer
Burning of candle isa)Neither physical and chemical changeb)Chemical c...
Burning of candle is both physical and chemical change as wax first melt which is a physical change and burning of wick is a chemical change and it is irreversible...so the correct answer is C.
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Burning of candle isa)Neither physical and chemical changeb)Chemical changec)Both physical and chemical changed)Physical changeCorrect answer is option 'C'. Can you explain this answer?
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