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Why does the substances temperature stay the same when changing its state?
Wiki User
∙ 12y ago
When matter is changing state the temperature remains constant because the energy being put into the process is being used to change the state of the matter, whereas when the matter is not changing state, the energy being put into the process is used to raise the temperature.
Wiki User
∙ 14y ago
Anonymous
Wiki User
∙ 14y agoA good example of this phenomenon is how the temperature levels off at l00 degrees C when water starts to boil at one atmosphere pressure, and holds at l00 degrees until all the water has been vaporized.
The incoming heat energy is taken away as fast as it is added by the vapor molecules leaving the boiling water.
Edit:
It is because there is always a limit to the energy that can be assimilated by certain substance and if it's exceeded this substance is forced to change it's state.
Wiki User
∙ 14y agoIf a substance is at the edge of a phase change, they can gain thermal energy and yet stay the same temperature. For example, in iced water, the ice and liquid water are at the same temperature and yet the liquid water has more thermal energy.
Substances that have high specific heat do not experience large changes in temperature even with large gains of thermal energy.
(The question is ambiguous; let me know if these answers help!)
Wiki User
∙ 14y agoThe energy being put into the substance is not changing the temperature of the particles because it is being used to pull the particles apart - to break the attraction between the particles and change the state.
Wiki User
∙ 15y agoA substance such as the human body or an animal has the ability to maintain their core temperature by constantly adjusting itself.
Wiki User
∙ 15y agoIt can't, because temperature is the average kinetic energy of an object, so if the kinetic energy is increasing, then the temperature increases.
Wiki User
∙ 13y agoFor example, when ice is melting, the absorbed thermal energy is used to change the phase of the substance - a type of potential energy.
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Does other substances boil at the same temperature as water?
no?
Can two substances have the same specific heat?
It will be having different temperature, but same thermal energy and same temperature, but different thermal energy
How can a matter change from solid state to liquid state and reverse the process?
At a unique temperature, called the "freezing point", for each pure substance at a constant pressure, a solid form of the substance can change from solid to liquid phase by absorbing heat energy from its environment without raising the temperature of the substance, and, at the same temperature and pressure, a liquid phase of the same substance, can solidify without changing its temperature if it can transfer heat energy to the external environment.
Most substances that have molecules with approximately the same weight as water molecules are gases at room temperature. Water is a liquid at room temperature. Water is a liquid at room temperature be?
...because water molecules have strong intermolecular forces (hydrogen bonding) holding the moelcules together in the liquid state. Most other substances with similar molar mass do not exhibit hydrogen bonding, and thus they exist as gases.
What happens to the thermal energy of a substance during a physical change of state?
it will increase or decrease depending on the states. from solid --> liquid or liquid --> gas it is positive and endothermic, and thermal energy is increasing from liquid --> solid or gas --> liquid it is negative and exothermic, and thermal energy is decreasing
What happens to substances temperature during a change of state?
Temperature remains constant
Do all substances melt at the same temperature as water?
no
Does other substances boil at the same temperature as water?
no?
Can the temperature at which a substance melts is the same temperature at which it changes from liquid to solid?
Yes. Melting point is changing from a solid to liquid & freezing point is changing from a liquid to a solid. Both occur at the same temperature & these terms are usually used interchangably, although melting point is probably used more often than freezing point.
When solid changes into liquid?
Solids changing to liquids are melting Liquids changing to solids are freezing Solids changing to gas are subliming Liquids changing to gas are boiling Gases changing to liquids are condensing.
Do all substances catch fire on same temperature. Give reasons?
All substances does not Catch fire at the same temperature. More volatile substances -like solvents - Catch fire at a lot lower temperatures than more stable substance.
Does everything melt and boil at the same time?
You could possibly arrange an experiment for different substances to melt and boil at the same time, but they would not do so at the same temperature. Different substances have different properties, they do not all melt and boil at the same temperature.
Why same amount of heat supplied to same amount of different substances does not produce the same increase in temperature?
There is a formula in physics ΔQ=m*c*ΔT, where m is the mass of the substance you are heating, ΔQ is the heat you supply to the substance, c is the specific heat which has a different value for different substances and ΔT is the change in temperature. If your substances are different and they have the same mass then by supplying the same amount of heat the change in temperature will be different.
Does changing the shape and amount of an object affect its density?
no, because it is the same throughout, except if the temperature and pressure is changing
Why cant you change temperature and phase at the same time?
When an object is changing state form liquid to a gas the object is absorbing energy to allow its molecules to expand. it cant increase in temperature because it is using the energy that it is absorbing. When an object is changing state form liquid to a gas the object is absorbing energy to allow its molecules to expand. it cant increase in temperature because it is using the energy that it is absorbing.
What is the substances melting point the same as?
The freezing point is the same as the melting point, temperature-wise.
Can two substances have the same specific heat?
It will be having different temperature, but same thermal energy and same temperature, but different thermal energy
