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Is the melting point the same teperature as the freezing point for a substance?
Yes, when the substance is pure
What happens to the atom or molecules of a substance if it melts?
Nothing. Melting is a physical change and does not alter the chemical composition of a substance.
What happens at the melting of a substance?
The solid changes into a liquid
What is the meaning when something is boiling or melting?
Boiling occurs when a substance changes from a liquid to a gas at its boiling point, while melting happens when a substance changes from a solid to a liquid at its melting point. Both processes involve an increase in temperature that causes the substance's molecules to gain enough energy to overcome intermolecular forces and change states.
Higher melting point than expected?
It is indeed possible for a substance to have a higher melting point than expected. This normally happens when the substance is impure.
What happens when every substance has its own particular melting point?
it melts
Which is a substance turns from solid to liquid?
This physical phenomenon (a change of phase) is called melting; during melting the chemical nature of molecules is not changed.
What is a substance called when it change from solid to liquid?
This physical phenomenon (a change of phase) is called melting; during melting the chemical nature of molecules is not changed.
What happens when you add heat in a substance?
When heat is added to a substance, its molecules gain energy and move faster, causing the substance to increase in temperature. This can lead to changes in physical state, such as melting or boiling, depending on the substance's properties. In some cases, chemical reactions may also occur due to the increased thermal energy.
Why do the melting and boiling points of a particular subsatnce vary?
It is because the intermolecular forces(the attractive forces between the molecules of a substance) differ from one substance to another. The chemical with the stronger intermolecular forces will have higher melting and boiling points, and vice versa. This is because more energy is required to separate the molecules to melt or boil the substance, if the forces are strong. The factors that determine the size of these forces are :the type of bonding in the molcules, andthe mass of the molecules.
When a substance is melting the temperature of the substance what?
it decreases.
Substance changes from solid to liquid?
When a substance changes from solid to liquid, it undergoes the process of melting. This phase transition occurs when the substance reaches its melting point, causing the solid lattice structure to break down and the particles to move more freely, resulting in a liquid state. Energy is absorbed during melting to break the intermolecular forces holding the solid together.
