0
Why do substance s expand when energy is added to them as heat?
Wiki User
∙ 15y ago
When heat is added to a system, it increases the kinetic energy of the molecules.
Increased K.E in system causes molecules to move further away from each other.
This causes system to increase in volume. Significant increase in volume might not occur but at microscopic level it definitely changes.
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
What happens to atoms of A substance when heat is added?
When heat is added to a substance, the molecules and atoms vibrate faster.
What is the name given to heat energy at melting point?
The heat energy required to change a substance between solid & liquid at constant temperature is called the "latent heat of fusion". If the change is from solid to liquid the substance gains this energy. If the change is from liquid to solid the substance gives up this energy. The exact amount of latent heat of fusion is different for different substances.
Heat being added or taken away from a substance may cause?
more or less heat
The specific heat of substance A is greater than that for substance B If both sample sizes are the same and they both start at the same temperature and equal amounts of heat are added to both these s?
The specific heat of substance A is greater than that for substance B. If both sample sizes are the same and they both start at the same temperature and equal amounts of heat are added to both these samples, substance A will have a lower temperature than substance B.
What substance was found not to be an element in 1808?
The secret substance is: Heat energy.
What is an increase in volume that occurs when heat is added to a substance called?
expand
What has to be added to a substance to cause a phase change?
Heat energy must be added to or subtracted from a substance to cause a phase change.
Why does evaporation require that heat energy be added to a substance?
Heat is energy the substance needs to change it's state of matter (the more energy a substance has the higher it's temperature)
Why does the matter expand when heated?
Heat energy causes all matter to expand, a reason for this strange occurrence is that when a particular substance receives heat whether it be through conduction, convection or radiation the atoms inside the substance become more energised therefor needing more space to move, they push the outside boundaries making the substance expand. If the substance receives an exceeding amount of heat energy it will change states of matter.
Why may the temperature of a substance change when energy is added?
Thermal energy of a substance is determined by the movement of the molecules and the potential energy of the arrangement of molecules. Heat transfer will stop when thermal equilibrium is reached. It depends upon the substance how long that takes.
Why do substance expand when heat energy is added to them?
Heat is a measurement of the amount of motion (or kinetic energy) of the particles of which a given substance is composed. In a solid, this motion is just a vibration, since the particles remain in place. When particles vibrate more, they will take up more space. In a gas, the particles move independently of each other, and if they move faster, they will exert more pressure and thus will tend to expand.
What happens to atoms of A substance when heat is added?
When heat is added to a substance, the molecules and atoms vibrate faster.
What happen to the heat energy as a substance solifies?
what happen to the heat energy as a substance solidifies
What do you have to do to heat energy to freeze a substance?
You need to take heat energy out of the substance.
When you put air into a sealed syringe and then place it into boiling water why does it expand?
The air particles within the sealed syringe expand because the heat from the water gives it energy. And when energy is added to a substance, the particles have more energy to break away from the attractions set on by the other particles. In other words, it expands. (hope that answers it for you.) as the air particles gain heat energy ,they convert this energy into their kinectic energy which makes the particles of the air to move more faster and apart from each other hence resulting in expansion
What is the expansion meaning of eta?
That usually means that when you heat a substance, it will expand - its volume will increase.
How does adding or removing heat to a system result in of temperature or change in state?
then the temperature either goes up or down. When you add heat to a substance the substance normally spreads out more for on a subatomic level the atoms vibrate more. Gases have a larger volume at the same pressure and fluids can increase in volume too. Solids normally expand. The opposite to the above is true with a decrease in temperature. It is good to note that if you melt ice it decreases in volume which is proof that heat dose not always expand the substance.
