0
Heat energy must be added to or subtracted from a substance to cause a phase change.
Wiki User
∙ 11y ago
Wiki User
∙ 12y agoenergy
Add your answer:
Earn +20 pts
Why does the temp of water not increase during a phase change?
These are phase changes - All the energy that is added at this time is used to change the phase of the substance.
What phase change happens when something dissolves?
Dissolving a substance does not involve a phase change.
Does the temperature of a substance changes before the change of state is completed?
No. During a phase change the temperature is constant until the phase change is complete.
What is that phase change in which a substance changes from a gas to a liquid?
Condensation
What is the phase change in which substance changes from a gas to a liquid?
Condensation
Why does the temp of water not increase during a phase change?
These are phase changes - All the energy that is added at this time is used to change the phase of the substance.
As heat is added to a substance undergoing a phase change. why does the temperature remain?
Basically what it comes down to is the substance that is left behind during the phase change (say the liquid when it is changing to a vapor) has a lower internal energy than it had before the phase change started. To maintain the substance at its original temperature, an equivalent amount of energy must be added to make up for the loss of internal energy due to the phase change. (Conservation of Energy)The energy added in this case is heat, which in turn causes more molecules of the substance to change phases and lowers the internal energy & the process repeats. This is why the temperature remains constant as you add heat to a substance during a phase change. Once the phase change is completed the added heat will eventually cause the temperature to rise in the new phase of the substance. Hope this explanation helps. It's kind of hard to explain without a basic knowledge of thermodynamics.
How does phase change effect the mass of a substance?
Phase change doesn't effect the mass of substance. However, it cause drastic change of density and the weight of substance may change due to buoyancy force.
What is the phase change in which substance change form a gas to aliquid?
Condensation is the phase change in which substance change form a gas to a liquid.
What happens to energy added during a phase change?
The added energy is used in the phase change to break intermolecular bonds.It is used for the phase change. ~ APEX
What happens to the energy added during a phase change?
The added energy is used in the phase change to break intermolecular bonds.It is used for the phase change. ~ APEX
What causes a substance to change a phase?
change in temperature
What phase change happens when something dissolves?
Dissolving a substance does not involve a phase change.
What do the lines on a phase diagram represent?
The lines show where a phase changes happens to a substance -
The phase change in which a substance changes from a gas directly to a liquid is?
this phase change is called condensation
Which is the phase change in which a substance change from a gas to liquid?
It is condensation.
As heat is added to a substance undergoing a phase change the temperature remains constant because the energy is being used to?
Overcome intermolecular forces
