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Question
Fill in the blank with the correct word of the statement given below:
Sublimation involves a __________ change.
Solution
Sublimation involves a physical change.
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RELATED QUESTIONS
Try segregating the things around you as pure substances or mixtures.
Write true or false for the statement.
Deforestation is a man-made 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
True or false
Dissolving of a solid in liquid is a physical change.
Fill in the blank
Changes that occur in nature are called ______
Fill in the blank.
A change, which alters the composition of a substances, is known as a___________ change.
Filling up a balloon with hot air is a _______ change.
Gas exists in three states as solid, liquid, and gas.
The change of state of a substance from solid to liquid and liquid to gas is ______.
Give an example to justify the statement that physical changes can be reversible as well as irreversible.
