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What can infer about the attraction between particles in a substance with a low melting point?
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∙ 10y ago
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Describe the movement of the particles at the melting point of a substance?
At its melting points the particles of a substance become looser and can move more freely. There is no order unlike a solids particles, however there isn't complete freedom to move everywhere unlike gases particles.
When a substance is melting the temperature of the substance what?
it decreases.
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.
How do solids dissolve in liquids?
By being heated up and turning into either a gas or a liquid.
How can the melting point of water be changed?
by adding impurities the melting point of ice can be increased.... and perhaps can water melt i think the right question suppose to be how can the melting point of ice be changed?
Which type of substance is most likely to experience an attraction between its particles?
All substances experience attraction between their particles. These vary in type and strength. If there were no forces they would never form liquids or solids. You could say that the strongest bonds are in the substances with the highest melting points.
The stronger the intermolecular forces in a substance?
The stronger the forces the stronger the attraction between the molecules in the substance. This will tend to increase the temperature of phase changes, melting and boiling points.
What is the relationship between the molar enthalpy of fusion of a solid and the strength of attraction between that solids particles?
the strength of attraction is proportional to 1/d 3, where d is the distance between dipole
Why the inter-particle space increases on heating a solid at its melting point?
when we heat a substance its kinetic energy increases and due to this kinetic energy the force of attraction decreases and can no longer hold the particles together.
Do elements melt?
I'm assuming you are talking about sub-atomic particles. The act of melting cannot be applied to particles because melting refers to a change of state of a substance. Substances, whether they be compounds or elemental, are a collection of atoms. These atoms, can be of 3 different states, depending on their temperature. If below the particular substance's melting point, it is solid. Between the melting and boiling point, the substance is liquid, and above the boiling point, the substance is gaseous. The state of the substance refers to the total amount of energy within the substance. Heat is energy, and melting a substance is only adding energy to it. the substance, on a molecular level, does not change when melting occurs. Therefore, melting a particle cannot occur, only energy can be added, which increases movement of the particles.
The temperature at which the particles of a substance have more kinetic energy to transform is?
The melting or the boiling point.
Describe the movement of the particles at the melting point of a substance?
At its melting points the particles of a substance become looser and can move more freely. There is no order unlike a solids particles, however there isn't complete freedom to move everywhere unlike gases particles.
Physical state when a substance is melting?
When a substance is melting, there is equilibrium between the solid and liquid state, meaning it is both a solid and a liquid.
Is melting point classified as a chemical property or a physical property?
physical. melting does not change the substance; it only changes the state of matter (or the movement of particles).
What is the difference melting point of sodium iodide and naphthalene?
NaI has ions and has strong electrostatic force of attraction, hence high melting point. Naphthalene has weak van der Waals forces of attraction between the molecules and hence have low melting point.
What temperature does melting occur?
Melting occurs when a substance absorbs heat energy. The rigid crystal structure of the particles breaks down, and the particles are free to flow around one another.
When a substance is melting the temperature of the substance what?
it decreases.
