Advertisements
Advertisements
प्रश्न
Classify the following as physical or chemical change :
Condensation of steam
विकल्प
Physical change
Chemical change
Advertisements
उत्तर
Condensation of steam – Physical change
APPEARS IN
संबंधित प्रश्न
Try segregating the things around you as pure substances or mixtures.
Match the columns
| column A | coulmn B |
| 1. A change which cannot be easily reversed | a. man-made change |
| 2.A change that repeats itself at regular intervals | b. chemical change |
| 3. A change that is made by humans | c. physical change |
|
4. A change in which the original substance cannot be obtained |
d. periodic change |
| 5. A change where no new substance is formade | e. irreversible change |
| f. slow change |
Tick (√) the correct alternative from the choice given for the following statement
Which one of the following is volatile in nature ?
True or false
Dissolving of a solid in liquid is a physical change.
Give a reason why
Change of seasons is a periodic change while the change of weather is a non-periodic change.
Compare the energy changes involved during a physical and a chemical change.
Give a reason why – Addition of zinc nitrate to water is a physical change but, the addition of zinc to dilute nitric acid is a chemical change.
Select the correct answer from the choice given below to complete the sentence
The energy required for completion of a physical change is ______________ when the change is reversed.
Name the following.
The gaseous product of the chemical change which takes place during respiration in living organisms.
When a woolen yarn is knitted to get a sweater, the change can be classified as ____________.
