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Question
Classify the Following as a Physical Or a Chemical change.
Glowing of an Electric Bulb
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Solution
Physical change
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RELATED QUESTIONS
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 |
State whether the following is physical or chemical changes.
(energy produced) dissolving sugar in water —
True or false
Is melting of ice a reversible change?
Which of the following are physical changes and which are chemical changes?
Burning of candle wax, Melting of candle wax, Mixing of iron filings and sand, Burning of wood, Breaking a piece of chalk, Burning a piece of paper, Cutting a piece of paper.
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
Fill in the blank.
A change, which alters the composition of a substances, is known as a___________ change.
Differentiate between a physical change and a chemical change with reference to – Energy change taking place during the respective change.
You are given some candle wax. Can you make a candle doll from it? What kind of change is this?
If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.
Do you think rust is different from iron?
Cutting a log of wood into pieces is a chemical change.
