5 Questions
What is the main difference between evaporation and boiling?
Evaporation involves molecules gaining enough energy to escape at the surface, while boiling involves molecules throughout the liquid gaining enough energy to turn into gas.
Why does rubbing alcohol evaporate faster on your hand than on a table?
Rubbing alcohol evaporates faster on the hand because the heat from the hand provides additional energy for evaporation.
What effect does temperature have on the rate of evaporation?
Higher temperatures increase the rate of evaporation.
Why does a liquid remain at the same temperature during boiling?
Boiling requires a constant energy input, which maintains the liquid's temperature.
At what point does boiling occur?
Boiling occurs when molecules throughout the liquid gain enough energy to enter the gaseous state.
Study Notes
Evaporation
- Evaporation occurs when surface molecules gain enough energy to enter the gaseous state
- Molecules can gain energy by moving fast enough at the surface or through collisions with air particles
- Evaporation can occur at any temperature, but rate increases with temperature
Boiling
- Boiling occurs when molecules throughout the liquid gain enough energy to enter the gaseous state
- Boiling point is the temperature at which molecules throughout the liquid can change to the gaseous state
- During boiling, the liquid remains at a constant temperature until all molecules turn into a gas
Test your knowledge on the processes of evaporation and boiling. Learn about how molecules gain energy to transition into the gaseous state and the factors that affect the rate of evaporation. Understand the difference between evaporation and boiling.
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