Advertisements
Advertisements
प्रश्न
Fill in the blank.
When a candle burns, wax melts. Melting of wax is a ________ change.
Advertisements
उत्तर
When a candle burns, wax melts. Melting of wax is a physical change.
APPEARS IN
संबंधित प्रश्न
Write true or false for the statement
A natural change can also be a desirable change
Tick (√) the correct alternative from the choice given for the following statement.
The compound rust is a hydrated oxide of
Give two examples of periodic changes.
Given reason:
Freezing of water to ice and evaporation of water are physical changes.
Give four difference between physical and chemical changes.
Change is the law of nature and occurs in our everyday life, at all times and in all places.
Differentiate between the following change with a suitable example.
Slow and fast change.
State whether the following statement is true or false. If false write the correct statement.
Melting of butter and wax are examples of chemical changes.
Give a reason why rusting of iron is a chemical change but, the magnetization of iron is a physical change.
You are given some candle wax. Can you make a candle doll from it? What kind of change is this?
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. |
