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प्रश्न
Give reasons for the following:
Sugar can be distinguished from talcum powder using water.
उत्तर
Sugar is soluble in water whereas talcum powder is not.
संबंधित प्रश्न
Give two example of the following:
The substances which do not change their state on heating.
Give reason for the following.
Pure substances have fixed melting or boiling points.
Match the following
| Column A | Column B |
| (a) Solids | (1) Can flow in all directions. |
| (b) Sublimation | (2) The temperature at which a liquid changes into its gaseous state. |
| (c) Boiling point | (3) Any number of free surfaces. |
| (d) Gases | (4) Gaps between particles. |
| (e) Intermolecular space | ro(5) Change of state fm solid to gas. |
Name the phenomenon which cause the following change:
Disappearance of camphor.
Why liquids do not have a definite shape ?
How will you prove by an experiment that solids occupy space ?
Write whether the following statement are true or false.
Solids have the largest inter-molecular space.
Define: interconversion of states of matter.
Each of the three states of matter has mass. Explain with the help simple experiments – that each state of matter has mass.
Fill in the blank:
The three states of matter are classified on the basis of differences of certain _________.
