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Does boiling point is a physical change or property?
Boiling point is a physical property of a substance, as it is a characteristic of the substance that remains constant despite changes in its physical state. When a substance reaches its boiling point, it changes from a liquid to a gas through the physical process of boiling.
Is boiling point intensive property?
Yes, boiling point is an intensive property because it does not depend on the amount of the substance present. It is a characteristic property that remains constant for a pure substance at a given pressure.
For any pure substance the boiling point and melting point will always remain?
The melting point and the boiling point of a substance are physical characteristics for each substance and are unchanged at the same pressure.
Does shape change in boiling?
No, the shape of a substance generally does not change during boiling. Boiling involves a phase transition from liquid to gas, but the overall shape remains consistent with the container holding the liquid. However, the appearance of the substance may change as bubbles form and rise to the surface.
What temperature at which a substance in the liquid phase transforms to the gaseous phase refers to the substances?
The temperature at which a substance in the liquid phase transforms to the gaseous phase is called the boiling point for pure substances. It is a characteristic property of the substance and remains constant under a specific pressure.
Does a pure substance always boil at a fixed temperature?
Yes, a pure substance boils at a fixed temperature under a specific pressure. This boiling point is characteristic of the substance and remains constant as long as the pressure is maintained. However, if impurities are present or if the pressure changes, the boiling point can vary.
Is boiling temperature a characteristic property?
Yes, boiling point is a characteristic property of matter. It is called a characteristic property because no matter how much of a pure substance you have, the boiling point should remain the same. Therefore, it is a characteristic property of pure substances.
Is boling point a extensive or intensive property?
Boiling point is an intensive property. Intensive properties are independent of the amount of substance present, meaning that the boiling point remains the same regardless of how much of the substance is present. For example, the boiling point of water is 100°C at standard atmospheric pressure, whether you have a cup or a liter of water.
Why temperature remains constant at melting and boiling point of substance?
The temperature remains constant at the melting and boiling points of a substance because all the energy added during these phase changes is used to break intermolecular bonds rather than increase the kinetic energy of the molecules. During melting, the energy breaks the bonds holding the solid structure together, while during boiling, it overcomes the forces keeping the liquid molecules together. As a result, temperature does not rise until the entire substance has completely transitioned to the next phase.
What does the composition of a substance does not change?
The composition of a substance remains constant if the chemical bonds that hold the atoms together are not broken. This means that the types and numbers of atoms present in the substance do not change, even if it undergoes physical changes like melting or boiling.
When Hydrogen sulfide is boiling is it a chemical or physical change?
Boiling hydrogen sulfide is a physical change, as it is a reversible process where the substance changes from a liquid to a gas due to the absorption of thermal energy. The chemical composition of hydrogen sulfide remains the same during boiling.
Which substance remains a liquid over a largest temperature range?
Water remains a liquid over a large temperature range.
