Question

If a mixture of different gases is heated, it rises to the top of its container. Which statement best explains this result?(1 point)
Responses

Heated gases have lower kinetic energy and higher density.
Heated gases have lower kinetic energy and higher density.

Heated gases have higher kinetic energy and decreased density.
Heated gases have higher kinetic energy and decreased density.

Heated gases have lower kinetic energy and lower density.
Heated gases have lower kinetic energy and lower density.

Heated gases have higher kinetic energy and higher density.

Answer 1

The correct statement is: **Heated gases have higher kinetic energy and decreased density.**

As gases are heated, their molecules gain kinetic energy, causing them to move more rapidly. This increased movement results in an expansion of the gas, leading to a decrease in density. Therefore, heated gases tend to rise in a mixture because they are less dense than the cooler, surrounding gases.