It is there that matter changes there form when temperature increases and pressure decreases then what about a brick

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Explain about conductivity in conductors, insulators, semiconductors(increase or decrease and why)when temperature and pressure changes?

The process by which matter in its solid state changes to gaseous state due to an increase in temperature and/or decrease in pressure is called as ______________.

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Q. It is found that with an increase in temperature by 40% the volume decreases by 20% with change in pressure. Find the percentage change in pressure.

Q. Matter undergoes a change. The changes are of two types: Physical and chemical change.

A physical change is a change that involves only a change in the physical state of matter. Its chemical properties remain the same. Usually increasing the temperature or applying pressure or both bring about a physical change. On reversing the condition, that is reducing the temperature or reducing the pressure or both, the original state of matter is restored. In other words, physical changes are reversible.

A chemical change is a change that involves a change in the chemical composition of matter. A new substance is formed. In a chemical change, new chemical and physical properties of the substance are formed. In a chemical change, the chemical and physical properties of the substance formed will be different from the original substance.

In a chemical change, the properties that change are :

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