science
Grade-5
Easy

Question

The substance where no new substance is formed is called

  1. Physical change
  2. Chemical change
  3. Chemical equation
  4. Chemical reaction

hintHint:

Physical change

The correct answer is: Physical change

physical change is where no new substance is formed.

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chemical change is also calles chemic reaction.
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When iron is exposed to air, iron changes its colour to brownish colour.

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Curd

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the picture depicts the changes.

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The representation of the relation between the reactant, when there is more than one substance

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The representation of the relation between the reactant, when there is more than one substance

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+ is used to represent when there are more than one reactants in a reaction.

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A chemical change or chemical reaction is a process that occurs when two or more molecules collide with the right orientation and sufficient force to form a new product.

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