0
Is it true that the hotter a substance is the less energy its molecules have?
Wiki User
∙ 7y ago
No.
Wiki User
∙ 7y ago
Add your answer:
Earn +20 pts
What will happen to the atoms or molecules of a substance when it condenses?
When a substance condenses, it turns from a vapor (gas) into a liquid. When this occurs, the atoms/molecules lose some kinetic energy, and don't move as fast. They also become packed closer together, and take up less volume.
What do molecules do when heat is transferred by conduction?
When heat is transferred by conduction, molecules in a substance or material interact in a specific way to transfer thermal energy from a region of higher temperature to a region of lower temperature. Here's what happens at the molecular level during heat conduction: **Vibration and Kinetic Energy:** In a substance, molecules are constantly in motion due to their thermal energy, which is often referred to as kinetic energy. They vibrate, rotate, and move randomly. **Hotter to Cooler:** When two regions of the substance are at different temperatures, such as a hotter region in contact with a cooler region, the molecules in the hotter region have higher kinetic energy compared to those in the cooler region. **Collision and Energy Transfer:** Molecules with higher kinetic energy in the hotter region collide with neighboring molecules. During these collisions, they transfer some of their kinetic energy to the cooler, less energetic molecules. This transfer of energy occurs through direct interactions between neighboring molecules. **Equilibrium:** Over time, as more collisions and interactions take place, the kinetic energy is transferred from the hotter region to the cooler region. This continues until thermal equilibrium is reached, where the temperatures of both regions become equal, and there is no net heat flow between them. Conduction is most effective in materials that are good conductors, such as metals, as they have highly mobile electrons that can facilitate the transfer of kinetic energy. Insulators, on the other hand, do not conduct heat as effectively because their molecules are less mobile and have fewer free electrons. In summary, during heat conduction, the molecules in a substance transfer kinetic energy from faster-moving, hotter molecules to slower-moving, cooler molecules through direct collisions, leading to a flow of thermal energy from the hot region to the cold region until thermal equilibrium is reached.
Molecules tend to move into area where there are more molecules?
That takes energy. Normal diffusion means that the molecules move away from each other (in other words ... to where there are less molecules).
Heat reaches a person using what type of heat transfer?
i think first where do you get the wood from??? trees?? so that's chemical. Then a campfire is hot right?? so it's thermal. So chemical to thermal
Will 1 liter of hot water have more or less heat energy than 2liters of hot water?
no, there is no difference
Is it true that the the hotter a substance is the less energy its molecules have?
No.
Does it take less energy to heat hotter water than colder water?
Yes, as the molecules of the hot water are already in motion, they need less energy to speed up and transfer it whereas the molecules of cold water need far more energy so that they get into motion and then transfer energy.
Particles in a liquid have less energy than particles in a. water b. a computer c. ice d. a gas?
In terms of kinectic energy molecules in soilid will have least energy. Molecules in lquid have less energy than in gases. Molecules in gaseous state have maximum energy. Entropy of a substance increases from solid to liquid to gas.
Explain why evaporation is a cooling process?
The molecules in any substance do not have exactly the same energy: there are those with more (hot) and those with less (cool). Temperature is a function of the distribution of energy through the molecules: the higher the overall energy of the molecules, the higher the temperature. Evaporation occurs when the higher energy (hot) molecules leave the substance exactly because their energy is above average (they are too hot). This leaves behind lower energy molecules (cooler molecules) which, in turn, means that the overall energy of the substance diminishes. Another way of putting it: leaving behind cooler molecules means the temperature goes down closer to them. Its a heat exchange. like the high energy molecule evaporate and then the low energy remain in the material low energy means cool molecules remain at the surface. its a cooling process in this way.
If something has a low specific heat does it need more or less energy to get hotter?
"Less"
What will happen to the atoms or molecules of a substance when it condenses?
When a substance condenses, it turns from a vapor (gas) into a liquid. When this occurs, the atoms/molecules lose some kinetic energy, and don't move as fast. They also become packed closer together, and take up less volume.
What do molecules do when heat is transferred by conduction?
When heat is transferred by conduction, molecules in a substance or material interact in a specific way to transfer thermal energy from a region of higher temperature to a region of lower temperature. Here's what happens at the molecular level during heat conduction: **Vibration and Kinetic Energy:** In a substance, molecules are constantly in motion due to their thermal energy, which is often referred to as kinetic energy. They vibrate, rotate, and move randomly. **Hotter to Cooler:** When two regions of the substance are at different temperatures, such as a hotter region in contact with a cooler region, the molecules in the hotter region have higher kinetic energy compared to those in the cooler region. **Collision and Energy Transfer:** Molecules with higher kinetic energy in the hotter region collide with neighboring molecules. During these collisions, they transfer some of their kinetic energy to the cooler, less energetic molecules. This transfer of energy occurs through direct interactions between neighboring molecules. **Equilibrium:** Over time, as more collisions and interactions take place, the kinetic energy is transferred from the hotter region to the cooler region. This continues until thermal equilibrium is reached, where the temperatures of both regions become equal, and there is no net heat flow between them. Conduction is most effective in materials that are good conductors, such as metals, as they have highly mobile electrons that can facilitate the transfer of kinetic energy. Insulators, on the other hand, do not conduct heat as effectively because their molecules are less mobile and have fewer free electrons. In summary, during heat conduction, the molecules in a substance transfer kinetic energy from faster-moving, hotter molecules to slower-moving, cooler molecules through direct collisions, leading to a flow of thermal energy from the hot region to the cold region until thermal equilibrium is reached.
Can thermal energy be cool when its hot?
Yes. But a cooler body has less energy than a hotter object
How does water change from one state to other?
As the heat is lost from the water substance, the H2O molecules lose energy and move around less. This makes the state change. It is also inversely true for when heat is gained. It adds energy to the molecules and they move around more.
What happens to the molecules as a solid melts?
As a substance melts, the molecules of the formerly-solid substance becomes less structured and drifts further apart.
How does kinetic energy affect diffusion rate?
The greater the collision rate, the greater the diffusion rate. As the molecules of the substance that is diffusing are more concentrated, the molecules collide more. As they diffuse and spread apart, there are less collisions and diffusion slows down.
One of the factor affecting density?
One of the factors affecting density is temperature. Because the particles spread more apart when heated, the hotter the substance is, the less dense the substance gets. another one has six letters that describes all of it is energy!!
