What do you understand by expansion and contraction? How all the three states are related to them?
Answers
Answer:
Substances expand (increase in size) when they get warmer, and they contract (decrease in size) when they get cooler. This property can be useful. For example:
Thermometers work because the liquid inside them expands and rises up the tube when it gets hotter.
Metal parts can be fitted together without welding, using shrink fitting. The slideshow shows how this works:
What do the particles do?
When substances expand or contract, their particles stay the same size. It is the space between the particles that changes:
the particles in a solid vibrate more when it is heated, and take up more room
the particles in a liquid move around each other more when it is heated, and take up more room
the particles in a gas move more quickly in all directions when it is heated, and take up more room
Answer:
expansion means to expand solids expand when heated, liquids expand the leadt but it shows anomalous prop3in case of water and gases never expand
contraction means to contract that means gases and liquids conract and gases contract the least.
The three states are - Solid, Liquid and Gas