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The change from liquid or solid into vapor. Note that there are technically still hydrogen bonds while in the gas phase, but they're not as important (unless at a high pressure and/or low volume).
Wiki User
∙ 13y ago
Wiki User
∙ 13y agogas
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Which attractions are most prevalent between molecules of HF in the liquid phase?
Hydrogen bonds
Why is a phase change not a chemical reaction?
Because chemical bonds are not formed or broken by a phase change.
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
Is boiling water is a chemical change or a physical change?
physical
Are hydrogen and oxygen a change of state?
If water is being split into hydrogen and oxygen then a change of state (phase change) will occur if the water is in liquid form and the hydrogen and oxygen are evolved as gases. If water vapor is being split, then obviously no change of state occurs. Conversely, solid water in the form of ice could be split into hydrogen and oxygen gas, also undergoing a phase change.
Why does water require so much energy to change its phase?
Water has a large number of hydrogen bonds
Which attractions are most prevalent between molecules of HF in the liquid phase?
Hydrogen bonds
What does not increase during a phase change?
Hydrogen
What happens to the energy during a phase change?
When energy is added during a phase change the energy is used to break molecular bonds.
How does particle change from phase to phase?
Temperature and/or pressure cause the bonds holding particles together to weaken.
Why is a phase change not a chemical reaction?
Because chemical bonds are not formed or broken by a phase change.
What happens to the energy added during the phase change?
When energy is added during a phase change the energy is used to break molecular bonds.
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
Is boiling water is a chemical change or a physical change?
physical
How do you make margarine from vegetable oil?
this is achieved by a hydrogenation reaction. The idea being that the oil molecules are unsaturated double bonds, when their exposed to hydrogen gas at high pressure , this causes hydrogen to be added to the molecules and change the double bonds to single bonds, which is responsible for the phase change from liquid to solid.
Are hydrogen and oxygen a change of state?
If water is being split into hydrogen and oxygen then a change of state (phase change) will occur if the water is in liquid form and the hydrogen and oxygen are evolved as gases. If water vapor is being split, then obviously no change of state occurs. Conversely, solid water in the form of ice could be split into hydrogen and oxygen gas, also undergoing a phase change.
Why does temperature no change during energy phase change?
During a phase change, the heat transferred to a substance is used to break intermolecular forces (latent heat), and thus the temperature of the substance does not change. The opposite also occurs: heat is transferred from a substance during a phase change without a decrease in temperature as intermolecular bonds form.
