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प्रश्न
Classify the following as physical or chemical properties
Metallic sodium is soft enough to be cut with a knife.
उत्तर
Physical property
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संबंधित प्रश्न
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 |
Classify the following changes as physical or chemical:- melting of a solid (wax)
State whether the following is physical or chemical changes.
mixing oil with water —
Fill in the blank
Changes that occur in nature are called ______
What are man-made changes ?
Sublimation is classified as a physical change. Why ?
Give three reasons why melting of wax, is considered a physical change while burning of a candle, a chemical change.
Select the correct answer from the choice given below to complete the sentence
The matter is added or removed during a ____________ change.
Name the following.
The product obtained during a physical change when water converts from a liquid into a solid.
Gas exists in three states as solid, liquid, and gas.
