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What happens during a phase change as heat is added to a water sample?
As heat is added to a water sample during a phase change, all of that heat goes into changing the phase, say from solid ice, to liquid water, and as a consequence, the TEMPERATURE of the sampleDOES NOT CHANGE.
Why is a phase change not a chemical reaction?
A phase change is a physical change that involves rearranging the molecules in a substance without changing its chemical composition. In contrast, a chemical reaction involves the breaking and forming of chemical bonds, resulting in the formation of new substances with different chemical compositions.
What change is melting consider because energy is gained by the substance as it changes states?
Melting is known as a phase change because energy is absorbed by the substance as it transitions from solid to liquid. This added energy breaks the bonds holding the particles in a fixed position, allowing them to move more freely.
How is the kinetic energy of the particles of a substance affected when undergoing a phase change?
During a phase change, the kinetic energy of particles remains constant. This energy is used to break or form intermolecular bonds, causing the substance to change from one phase to another without a change in temperature.
What is the phase at room temperature of hydrogen?
At room temperature, hydrogen is in the gaseous phase.
Why does water require so much energy to change its phase?
Water requires a lot of energy to change its phase because of its strong hydrogen bonds. When heating water, energy is needed to break these bonds so that the water molecules can move more freely from a solid to a liquid or a liquid to a gas. Similarly, when cooling water, energy is released as the water molecules form more stable hydrogen bonds in the solid or liquid state.
What does not increase during a phase change?
Hydrogen
What happens during a phase change as heat is added to a water sample?
As heat is added to a water sample during a phase change, all of that heat goes into changing the phase, say from solid ice, to liquid water, and as a consequence, the TEMPERATURE of the sampleDOES NOT CHANGE.
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.
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 is released when water condenses as hydrogen bonds form?
Heat energy is released when water condenses as hydrogen bonds form. This is because the molecules are coming closer together, releasing energy that was used to keep them apart in the vapor phase.
Why is a phase change not a chemical reaction?
A phase change is a physical change that involves rearranging the molecules in a substance without changing its chemical composition. In contrast, a chemical reaction involves the breaking and forming of chemical bonds, resulting in the formation of new substances with different chemical compositions.
What change is melting consider because energy is gained by the substance as it changes states?
Melting is known as a phase change because energy is absorbed by the substance as it transitions from solid to liquid. This added energy breaks the bonds holding the particles in a fixed position, allowing them to move more freely.
How is the kinetic energy of the particles of a substance affected when undergoing a phase change?
During a phase change, the kinetic energy of particles remains constant. This energy is used to break or form intermolecular bonds, causing the substance to change from one phase to another without a change in temperature.
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.
What happens to temperature during a phase change?
During a phase change, the temperature remains constant as the substance absorbs or releases heat energy to change from one phase to another. This is because the energy is used to break or form intermolecular bonds rather than raise or lower the temperature.
