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Changes

Are the chara...

Question

Are the characterstics of a chemical change and a chemical reaion same or different.If different mention the differences

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Solution

There is no difference between the two and both are the same. The main character of a chemical change is that, in such reactions the new substance is formed generally have different physical and chemical properties than the parent compound or substance.

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Q. Which of these is a chemical change?

(a) A substacne with different chemical properties is formed.
(b) A substance in a different state but similar chemical properties is formed.
(c) The molecules of the substances do not undergo any change.
(d) A substance with a different shape and size but similar chemical properties is formed.

Q. In a change, new substances having different molecules are formed. Is the change physical or chemicals?

Q. Radioactive changes and ordinary chemical changes are different, because radioactive changes:

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 :

What are the differences between physical and chemical changes?

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