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Is evaporation of ethanol a physical change?
Yes, evaporation, melting, and freezing are all physical changes. For it to be a chemical change, the substance would have to become a different substance. Evaporated ethanol is still ethanol, it is just in gas form.
What is ethanol condensation point?
Ethanol has a condensation point of about 78.37°C (173.07°F) at standard atmospheric pressure. This is the temperature at which ethanol transitions from a gas to a liquid state.
Water and ethanol can be separated by heating the ethanol until it boils away from the water What type of change is this?
This is a physical change because the identity of the substances (water and ethanol) remains the same. The change is reversible, as both water and ethanol can be recovered from the separated mixture.
Formation of ethanol from glucose by yeast a chemical or physical change?
The formation of ethanol from glucose by yeast is a chemical change. This process involves the fermentation of glucose by yeast to produce ethanol and carbon dioxide, resulting in a new substance with different chemical properties than the original glucose.
Is the condensation of water vapor a chemical rection?
No, the condensation of water vapor is a physical process, not a chemical reaction. It is the process by which water vapor changes into liquid water when it cools down.
