Possible factors that affects the burning time of a candle

1. The length of the candle

2. The humidity of the surrounding oof the candle while lighted up

3. The temperature of the surroundings of the candle while lighted up

4. The amount of fire used to light up the candle

5. The source of fire used to light up the candle

6. Movement of air in the environment

7. Hardness of the wax

8. The colour of the candle

9. The scent scented candle gives off

10. The size of the candle

11. The material of the wick