0
A change of state in which energy is removed from a substance is called an?
Wiki User
∙ 9y ago
A change of state where energy is removed from a substance is called an exothermic reaction. This chemical reaction releases energy in the form of light or heat.
Wiki User
∙ 9y ago
Add your answer:
Earn +20 pts
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.
What is the importance of physical change?
The importance of physical change is that :-1) No new substance is formed.2) It is a temporary change.3) It is easily reversible.4) Very little heat energy is absorbed or given out.The mass of a substance does not alter in a physical change.
Do substances absorb or release heat energy as then change from a liquid to the solid phase?
When a substance changes from a liquid to a solid it releases energy. (You take the heat out)
Explain Why physical changes can be reversed but chemical changes cannot?
Physical changes are generally easy to reverse because NO ENERGY is produced by the substance.A Chemical change cannot be reversed because ENERGY is produced by the substance forming a new substance.
Why does liquid evaporate?
A substance changes from liquid to gas during evaporation because energy is absorbed. Evaporation is an important part of the water cycle.
When energy removed from a substance what chANGE OCCUR?
When energy is removed from a gas, condensation occurs. When energy is removed from a liquid, freezing occurs.
When energy is removed from a substance what type of change is it?
It's burning.
What is the difference between endothemic and exothemic?
The difference is that the endothemic change is when energy is absorbed from the substance and exothermic change is when energy is removed or taken out of the substance.
What is the name of the energy needed to change a substance from a liquid to a gas?
The energy needed to change a substance from a liquid to a gas is called the enthalpy (or heat) of vaporization.
What happens when energy is taken away from matter?
The substance's particals will start slowing down and come closer together. As kinetic energy is removed from a substance, it will do the opposite as when kinetic energy is added to a substance.
The temperature at which no more energy can be removed from a substance?
The temperature at which no more energy can be removed from a substance is absolute zero, which is 0 Kelvins or -273.15 degrees Celsius.
When energy enters a substance what is it called?
The electrons of different atoms start moving due to the change in kinetic energy. This produces a rise in the temperature of the substance. Each substance will have different reactions to the temperature changes{THIS WAS NOT MY ANSWER}
What is the amount of change in the thermal energy of a certain mass of a substance per degree of change in temperature?
That is called the specific heat.
How does the energy of a substance change during an exothermic change?
During an exothermic change, such as freezing, the substance releases energy to its surroundings.
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.
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 wouldn't the temperature of a substance change when heated or cooled?
There are two points for most substances where a phase change takes place. The energy used to rearrange molecules, called the heat of entropy, must be added or removed before the phase can change. The substances show little or no temperature change at some point in this process.
