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प्रश्न
Classify the following as physical or chemical properties
The composition of a sample of steel is 98% iron, 1.5% carbon and 0.5% other elements.
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उत्तर
Physical property
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संबंधित प्रश्न
Explain the following giving an example.
Pure substance
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 |
Write true or false for the statement
A natural change can also be a desirable change
What is a physical change ? Give two examples of physical changes.
Which of the following are physical changes ?
- melting of iron metal
- rusting of iron metal
- bending of an iron rod
- drawing a wire of iron metal
Distinguish between the following.
Physical change and chemical change
Name the following:
The final product of the physical change involved during the ‘melting of a piece of wax’.
Select the correct answer from the choice given below to complete the sentence
The matter is added or removed during a ____________ change.
Classify the following as physical or chemical properties
Metallic sodium is soft enough to be cut with a knife.
What kind of change is shown by tearing of paper?
