Question

Mark made observations as he watched a white candle burn. Use his data to answer the following question.

Time


Observations

0 minute


Candle is lit, black smoke rises, flame starts

1 minute


Flame glows red and orange

2 minutes


Wax drips down sides

3 minutes


Candle is shorter than when it started

4 minutes


Hot gases are rising

Which of Mark’s observations would show that a burning candle is a chemical reaction?

Back smoke is given off, hot gases are rising.

The wax starts to melt.

The candle is white and made of wax and a wick.

Time passes one minute at a time.

Answer 1

Answer:

The substance that reacts with the candle wax is oxygen. It comes from the air. Putting the jar over the candle keeps oxygen from outside the jar from getting in. The reaction can only use the oxygen that is already in the jar. So, when that oxygen is used up, the reaction can’t keep going. Running out of oxygen makes the flame go out.

Answer 2

Answer:

Hope this helps you...

Mark me as brainliest please....