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

Answer 1

The correct statement that best explains why a mixture of different gases rises to the top of its container when heated is: Heated gases have higher kinetic energy and decreased density.

As gases are heated, their molecules move faster (increased kinetic energy) which typically causes them to spread apart, leading to a decrease in density. Since less dense gases rise above denser gases, this explains the observed behavior.