Final answer:
The presence of more oxygen generally creates a more intense and bluish flame, as the complete combustion produces a higher temperature. Bunsen burners produce a bluish flame indicating a higher temperature than the yellowish flame of a peach-scented candle.
Step-by-step explanation:
The statement true is correct regarding the relationship between oxygen intake and flame color and intensity. In combustion, the oxygen intake can indeed be controlled to change the characteristics of a flame. The more oxygen present, generally the more intense and blue the flame will be. This is because a higher concentration of oxygen allows for a more complete combustion reaction, which typically produces a hotter and more intense flame. Conversely, a flame with less oxygen tends to be more yellowish and less intense.
As for the colors of flames and their temperatures, a bluish flame indicates a higher temperature than a yellowish flame. In the comparison between the flame of a peach-scented candle and a Bunsen burner, the Bunsen burner's bluish flame is indeed of a higher temperature. In the Bunsen burner, the bluish color results from the efficient combustion of the gas with plenty of oxygen, which produces a higher temperature flame.
It's important to note that oxygen has a higher affinity for hemoglobin than carbon monoxide, but carbon dioxide generally has less affinity for hemoglobin than oxygen.