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प्रश्न
Give a reason why
Change of seasons is a periodic change while the change of weather is a non-periodic change.
उत्तर
Change of season is periodic change as it occurs at regular intervals. Change of weather is non-periodic change because it does not occur periodically at regular intervals. Weather can change suddenly and it may rain in the evening.
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संबंधित प्रश्न
Fill in the blank.
A new substance is formed in a ............... change.
Write true or false
Burning of sugar is a temporary change.
Tick (√) the correct alternative from the choice given for the following statement.
A substance which can not sublime is
True or false
In a physical change no net energy change is involved.
Give two examples of periodic changes.
Classify the following as physical or chemical changes :
Breaking of a glass tumbler
Classify the following as a physical or a chemical change.
Butter getting rancid
Select the chemical changes from the following list of changes
Preparation of carbon dioxide from calcium carbonate & dilute hydrochloric acid.
Match the examples of changes in List I with the correct type of change in List II.
| List I | List II |
| 1. Burning of paper | A: Physical change |
| 2. The ringing of an electric bell | B: Chemical change |
| 3. Curdling of milk | |
| 4. Electric light is switched on | |
| 5. Melting of butter |
What type of change is colouring of a paper?
