Which of the following will occur when a gas undergoes expansion?
1) The pressure of the gas increases.
2) Molecular collisions decrease.
3) The gas temperature increases.

Question

Quizplus · Accepted Answer

When a gas undergoes expansion, the volume increases, leading to a decrease in molecular collisions due to the increased space between molecules. This does not inherently increase the gas's pressure or temperature; in fact, pressure may decrease if the expansion is not compensated by an increase in temperature or amount of gas.

Which of the Following Will Occur When a Gas Undergoes