Question
The role of Oxygen in Photosynthesis
Joseph Priestley discovered the element Oxygen on August 1, 1774, when he isolated a colorless gas by heating red mercuric oxide. Through a series of experiments, Priestley demonstrated that plants produce oxygen, essential for combustion. His work revealed the importance of oxygen in the process of photosynthesis, although the gas was not yet identified as oxygen. In Priestley's experiment, what happened to the candle flame in the first experiment in which it was the only thing enclosed in the container?(1 point)
Responses
It exploded
It exploded
It burned brighter
It burned brighter
It went out (extinguished)
It went out (extinguished)
It changed color
It changed color
Question 2
In Priestley's second experiment in which both a plant and the candle were enclosed in the container, what occurred?(1 point)
Responses
The candle was extinguished immediately
The candle was extinguished immediately
The flame persisted longer than the original experiment
The flame persisted longer than the original experiment
It changed color
It changed color
It exploded
It exploded
Question 3
Which of the following choices below were proven by Priestley's experiments? Select all that apply. (1 point)
Responses
A flame requires oxygen to burn
A flame requires oxygen to burn
Photosynthesis absorbs oxygen from the environment
Photosynthesis absorbs oxygen from the environment
Carbon dioxide is essential to fire
Carbon dioxide is essential to fire
The process of photosynthesis releases oxygen into the environment
The process of photosynthesis releases oxygen into the environment
Joseph Priestley discovered the element Oxygen on August 1, 1774, when he isolated a colorless gas by heating red mercuric oxide. Through a series of experiments, Priestley demonstrated that plants produce oxygen, essential for combustion. His work revealed the importance of oxygen in the process of photosynthesis, although the gas was not yet identified as oxygen. In Priestley's experiment, what happened to the candle flame in the first experiment in which it was the only thing enclosed in the container?(1 point)
Responses
It exploded
It exploded
It burned brighter
It burned brighter
It went out (extinguished)
It went out (extinguished)
It changed color
It changed color
Question 2
In Priestley's second experiment in which both a plant and the candle were enclosed in the container, what occurred?(1 point)
Responses
The candle was extinguished immediately
The candle was extinguished immediately
The flame persisted longer than the original experiment
The flame persisted longer than the original experiment
It changed color
It changed color
It exploded
It exploded
Question 3
Which of the following choices below were proven by Priestley's experiments? Select all that apply. (1 point)
Responses
A flame requires oxygen to burn
A flame requires oxygen to burn
Photosynthesis absorbs oxygen from the environment
Photosynthesis absorbs oxygen from the environment
Carbon dioxide is essential to fire
Carbon dioxide is essential to fire
The process of photosynthesis releases oxygen into the environment
The process of photosynthesis releases oxygen into the environment
Answers
Answered by
GPT-4o mini
### Question 1
In Priestley's experiment, what happened to the candle flame in the first experiment in which it was the only thing enclosed in the container?
**Response:** It went out (extinguished)
### Question 2
In Priestley's second experiment in which both a plant and the candle were enclosed in the container, what occurred?
**Response:** The flame persisted longer than the original experiment
### Question 3
Which of the following choices below were proven by Priestley's experiments? Select all that apply.
**Responses:**
- A flame requires oxygen to burn
- The process of photosynthesis releases oxygen into the environment
In Priestley's experiment, what happened to the candle flame in the first experiment in which it was the only thing enclosed in the container?
**Response:** It went out (extinguished)
### Question 2
In Priestley's second experiment in which both a plant and the candle were enclosed in the container, what occurred?
**Response:** The flame persisted longer than the original experiment
### Question 3
Which of the following choices below were proven by Priestley's experiments? Select all that apply.
**Responses:**
- A flame requires oxygen to burn
- The process of photosynthesis releases oxygen into the environment
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