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Standard X
Chemistry
Physical and Chemical Changes
When a substa...
Question
When a substance has changes in its physical properties than it is known as:
A
Structural change
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B
Biological change
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C
Physical change
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D
Chemical change
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Solution
The correct option is
C
Physical change
Change in only physical properties is known as physical change.
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Q.
A change in which a substance undergoes changes in its physical properties is called:
Q.
Assertion :Physical change of a substance involves change in all properties and composition of its molecules Reason: The change of a substance with alteration of composition of its molecules without any change in its specific property is called physical change
Q.
Changes which only affect the physical form of a substance are known as:
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.
Changes in which only ____________ properties of a substance change are called physical changes.
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