Answer :
Answer:
Correct! The state of a substance (whether it is a gas, liquid, or solid) is determined by the balance between the attractive forces between its molecules and the kinetic energy of its molecules.
Explanation:
The attractive forces between molecules can be either strong (as in solids) or weak (as in gases). When the attractive forces between molecules are strong, the molecules are relatively close together and are unable to move freely past one another. As a result, solids have a fixed shape and volume.
On the other hand, when the attractive forces between molecules are weak, the molecules are able to move more freely past one another. As a result, gases have a relatively low density and are able to expand to fill their container.
The kinetic energy of the molecules refers to the energy of motion of the molecules. At higher temperatures, the molecules of a substance have more kinetic energy and are able to move more quickly. This can cause the substance to change state from a solid to a liquid or from a liquid to a gas, depending on the temperature and the attractive forces between the molecules.
The collisions between the molecules of a substance and the container also play a role in determining the state of the substance. When the molecules collide with the walls of the container, they exert a force on the walls. If the force is strong enough, it can cause the substance to change state. For example, if the temperature and pressure of a gas are increased to the point where the force of the molecule collisions with the container becomes strong enough, the gas may condense into a liquid.
Finally, the extent of molecular motion as determined by the average kinetic energy and temperature of the substance can also affect the state of the substance. At higher temperatures, the molecules of a substance will have a higher average kinetic energy and will be able to move more freely. This can cause the substance to change state from a solid to a liquid or from a liquid to a gas, depending on the temperature and the attractive forces between the molecules.