Question

Priestley experiment lab activity​

Answer 1

Answer:

1)Priestley kept a burning candle and a rat together in the single bell jar.

2)For the second time, he kept a burning candle, rat, and a green plant together in the bell jar.

3)He observed that neither the candle got extinguished, nor did the rat die.

Answer 2

Answer:

1. Priestley kept a burning candle and a rat together in the single bell jar.
2. Priestley kept a burning candle and a rat together in the single bell jar.After some time, candle extinguished and the rat died.
3. Priestley kept a burning candle and a rat together in the single bell jar.After some time, candle extinguished and the rat died.For the second time, he kept a burning candle, rat, and a green plant together in the bell jar.
4. Priestley kept a burning candle and a rat together in the single bell jar.After some time, candle extinguished and the rat died.For the second time, he kept a burning candle, rat, and a green plant together in the bell jar.He observed that neither the candle got extinguished, nor did the rat die.

Explanation:

Joseph Priestley conducted an experiment to determine the importance of air for the growth of green plants. He conducted a series of experiments in which he placed a burning candle and a mouse in a bell jar, such that no air could leave or enter the jar. He observed that in this set, the mouse died of suffocation.