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प्रश्न
State whether the following is physical or chemical changes.
glowing of a bulb -
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उत्तर
physical change,
APPEARS IN
संबंधित प्रश्न
Fill in the blank.
A new substance is formed in a ............... change.
Write true or false for the statement.
Burning of paper and formation of curd are reversible changes
Make a list of different types of changes with example.
State whether the following is physical or chemical changes.
heating a mixture of iron filings and sulphur—
True or false
Is melting of ice a reversible change?
True or false
Is the process of digestion a physical change?
Solve this crossword by using the clues that follow-
Across
1. Energy in the form of sunlight is absorbed by the green plants in this process.
4. The reddish-brown substance formed over iron in the presence of oxygen and moisture.
5. This change is permanent and irreversible.
6. The process in which a solid directly changes into gaseous state.
Down
1 . It is the change that takes place in case of swinging pendulum of a clock. –
2. Occurrence of this is a non-periodic change as well as a natural change.
3. It is a physical change.
What is a chemical change ? Give two examples of chemical changes.
Classify the following as a physical or a chemical change.
Burning of coal
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.
