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Physical and Chemical Changes

Select the ch...

Question

Select the change in which chemical properties does not change.

A

Physical Change

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B

Chemical Change

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C

Both physical and chemical change

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D

Chemical reaction

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Solution

The correct option is A
Physical Change

In a physical change, the chemical properties of substances do not change.

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Explain physical change and chemical change and physical properties and chemical properties.(explain briefly)

Chemical properties of the substances do not change with the change of its physical state but rate of chemical reaction do depend upon the physical state.what does this mean.

Physical change alters chemical properties and chemical change alters physical properties.

Say True or False.

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 :

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 of applying pressure or both brings about a physical change. On reversing the condition, i.e., 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, the chemical and physical properties of the substance is formed. In a chemical change, the chemical and physical properties of the substance formed will be different from the original substance. When zinc carbonate is heated and cooled, the change(s) that are observed are :

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