Based on Joseph Priestley's experiments, the following choices can be selected:
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A flame requires oxygen to burn - This was proven by Priestley's experiments with combustion and his discovery that a candle burned out in a closed jar due to the depletion of oxygen.
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The process of photosynthesis releases oxygen into the environment - Priestley discovered that plants could restore air quality by producing oxygen, especially when he placed a mint plant in a jar with a candle. This was a significant finding related to photosynthesis.
The following choices are not correct based on Priestley's experiments:
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Photosynthesis absorbs oxygen from the environment - This is not accurate; photosynthesis uses carbon dioxide and produces oxygen.
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Carbon dioxide is essential to fire - This statement is not supported by Priestley's work; rather, it is oxygen that is essential for combustion, not carbon dioxide.
Therefore, the correct answers are:
- A flame requires oxygen to burn
- The process of photosynthesis releases oxygen into the environment
1 answer