Question

experiments of Joseph priestly​

Answer 1

Answer:

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.

Answer 2

Priestley Experiment :-

• In the 18th century this scientist in 1770 performed a series of experiment .
• This experiment revealed that the essential rate of air in the growth of green plants .
• He discovered oxygen in 1774 .

______________________________

Experiments of Joseph priestly :

1. In the experiment he put a rat and a burning candle in a bell jar .
2. After sometimes he observed that a candle burning in the bell jar got extinguished .
3. The mouse would soon suffocate in the jar .
4. He concluded that a burning candle and the mouse breathe in air but something is present in the air which got finished and both the candle and mouse got extinguished .
5. Now he placed a mint plant in same Bell jar .
6. He found that the mouse stayed alive and candle got continued to burn .
7. He concluded that plant restore to the air whatever breathings animal and burning candle remove .

___________________

• Later he discovered oxygen in 1774 .