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Two factors that are responsible for a phase change?
Temperature and pressure are two factors that can cause a phase change in a substance. A substance will change from one phase to another when its temperature or pressure surpass a certain threshold, known as the melting point, boiling point, or sublimation point.
Sometimes heat energy is added but the temperature stays the same when is this?
When a substance undergoes a phase change, such as melting or boiling, heat energy is added, but the temperature remains constant. This is because the added energy is being used to break the intermolecular forces holding the substance together, rather than increasing the kinetic energy of the particles.
What illustrates a phase change?
A phase change is illustrated by a substance transitioning between different physical states, such as from solid to liquid (melting) or from liquid to gas (vaporization). During a phase change, the temperature of the substance remains constant even though energy is being added or removed to break or form intermolecular bonds.
Why does the temp of water not increase during a phase change?
During a phase change, the energy that is added or removed from the water is used to change the arrangement of water molecules rather than increase the temperature. This energy is used to break or form intermolecular bonds between the molecules, leading to a change in state (solid, liquid, gas) rather than a change in temperature.
Why do substances change phases when energy is added or removed?
When energy is added to a substance, the temperature of the substance increases, causing the particles to gain kinetic energy and move faster, resulting in a phase change. Likewise, when energy is removed from a substance, the temperature decreases, causing the particles to slow down and the substance to change phases. The energy absorbed or released during these phase changes is used to either break or form bonds between the particles.
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?
A phase change does not affect the mass of a substance because mass is a constant property of matter. During a phase change, such as melting or boiling, the substance's molecular arrangement changes, but the total mass remains the same.
How does pressure affect phase change?
Pressure affects phase change by altering the equilibrium between the different phases of a substance. Increasing pressure can cause a substance to transition to a more compact phase, such as from gas to liquid or from liquid to solid. Decreasing pressure can have the opposite effect, causing a substance to transition to a less compact phase.
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
Two factors that are responsible for a phase change?
Temperature and pressure are two factors that can cause a phase change in a substance. A substance will change from one phase to another when its temperature or pressure surpass a certain threshold, known as the melting point, boiling point, or sublimation point.
When a substance changes from one physical form to another you say the substance has had a what?
When a substance changes from one physical form to another, you say the substance has had a phase change or undergone a phase transition.
Sometimes heat energy is added but the temperature stays the same when is this?
When a substance undergoes a phase change, such as melting or boiling, heat energy is added, but the temperature remains constant. This is because the added energy is being used to break the intermolecular forces holding the substance together, rather than increasing the kinetic energy of the particles.
As heat is added to a substance undergoing a phase change the temperature remains constant because the energy is being used to?
break intermolecular bonds and change the phase of the substance rather than increase the kinetic energy of the particles (temperature).
Which change in state requires that energy be added to the substance?
Melting solid into liquid requires energy to be added to the substance.
What causes a substance to change a phase?
change in temperature
What illustrates a phase change?
A phase change is illustrated by a substance transitioning between different physical states, such as from solid to liquid (melting) or from liquid to gas (vaporization). During a phase change, the temperature of the substance remains constant even though energy is being added or removed to break or form intermolecular bonds.
What happens to a substances temperature during a phase change?
stays the same
