What causes the change of state in matter?

Answer 1

When energy is added or subtracted , a substance's state is physically changed.

The reason for this phenomenon is that solids have very little kinetic energy, so the molecules merely vibrate and preserve strong chemical bonds.

The strength of the bonds weakens as more energy is added, such as heat energy, which is converted into kinetic energy. This causes the molecules to move and vibrate more.

The molecules would be moving to the point of no longer being in their original state when a specific amount of heat is added (this varies per substance; for example, water has a melting point of 0 degrees Celsius and a boiling point of 100 degrees Celsius).

This process is the opposite when energy is reduced.

(I hope this clarifies and addresses your query.)

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Answer 2

Wyatt Atkins

Temperature and pressure changes lead to a change in the state of matter.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.