Which change of state occurs when particles in a solid begin to move slowly past each other?
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(Across 4) In physical changes, the state changes but the main thing remains the same. This change can be converted back to its original form and thus is called
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(Down 3) Which process is depicted in the following figure? _____________
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(Down 2) The temperature at which the solid gets converted into a liquid ___.
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(Across 1) These are the small particles of which the matter is made up of ___.
Lohri is a famous festival of India that is celebrated in North India with great vigour and excitement. In this festival, people burn wood as done in bonfire. When these wooden logs burn, they turn into ashes. What is such burning of wood, an example of?
Read the statements and choose the correct option.
Statement A: Physical change is irreversible.
Statement B: Chemical change is irreversible.
Why can't we make statue of water? A: Liquid can't have its own shape. B: It is hard to change shape of water like iron.
A chemical change takes place when one form of matter changes to ______.
Raju went to the jeweler to sell off his pure gold chain. The gold chain weighed 100 gm. If the jeweller melts 100 gm of pure gold and sell it, he will get:
The diagram given below depicts which of the processes of the change of state of matter?
Which of the following takes place when water vapour changes into ice?
The conversion of ice into water is an example of ______ .
Which of the following has a definite volume but no definite shape?
The conversion of solid into gas without changing into liquid is known as ______