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प्रश्न
Select the correct answer from the choice given below to complete the sentence
A change in which a substance retains its identity is a
______ change.
पर्याय
physical
chemical
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उत्तर
A change in which a substance retains its identity is a physical change.
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संबंधित प्रश्न
Fill in the blank.
A new substance is formed in a ............... change.
Ripening of fruits is a desirable change.
Write true or false
Dissolving of solute in a solvent and rusting of iron are both physical changes.
Classify the following as physical or chemical change :
Growth of a plant
Fill in the blank.
A change, which alters the composition of a substances, is known as a___________ change.
Give four reasons why the burning of a magnesium ribbon in the air is considered a chemical change.
Classify the following changes as physical and chemical changes
A rough piece of wood is sanded and polished resulting in change in texture, Rusting of a iron nail, Painting the grill, Bending a paper clip, Pounding silver into thin plate, Rolling the chappathi dough into thin wire, Occurrence of day and night, eruption of volcano, burning of matchstick, dosa from the batter, blinking of eyelids, occurrence of a thunderstorm, rotation of the earth, formation of eclipses.
| Sr. No. | Physical changes | Chemical changes |
| 1. | ||
| 2. |
What is the difference between dissolution of sugar and burning of sugar ?
A physical change is generally____________.
Mention some of the different conditions needed for chemical changes to occur.
