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प्रश्न
Write your observation and conclusion for the following:
Ice is kept at room temperature.
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उत्तर
Ice when kept at room temperature again changes back into liquid water.
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संबंधित प्रश्न
Fill in the blank:
The molecules are made up of ________
Write true or false for each statement. Rewrite the false statement correctly.
Solids and liquids can flow.
Describe a simple experiment to illustrate that molecules are not at rest, but they constantly move.
What are fluids? Give two examples.
Define Intermolecular force
Write true or false for the statement. Rewrite the false statement correctly.
The smallest part of an element capable of independent existence is called an atom.
Match the following
| Column A | Column B |
| (a) Solids | (i) Can flow in all directions |
| (b) Sublimation | (ii) The temperature at which a liquid changes into its gaseous state. |
| (c) Boiling point | (iii) Any number of free surfaces. |
| (d) Gases | (iv) Gaps between particles. |
| (e) Intermolecular space | (v) Changes of state from solid to gas. |
Fill in the blank:
Matter made up of one kind of particle is said to be _________.
Give a reason for the following:
Globules of mercury kept in a petri dish, which is shaken slowly, come together forming a big globule.
Write scientific reason.
Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.
