Albert Teen

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Order of Magnitude of Expansion

# Order of Magnitude of Expansion

### Order of Magnitude of Expansion

An increase in temperature leads to an increase in kinetic energy and thus movement of the particles that make up a substance. This leads to thermal expansion.

When you heat up a substance, you are increasing the particles'....?

True or false? When you heat an object up, it expands.

True or false? When you heat an object up the expansion is caused by the particles increasing in size.

If the particles do not expand in size, then what causes the expansion of the state of matter?

If you increase the temperature of any of the states of matter the particles have an increase in energy. This leads to all 3 states of matter increasing in size and is known as thermal expansion. The particles themselves do not increase in size.

True or false? The particles are arranged the same in all 3 states of matter.

In which of the 3 states of matter do the particles have the greatest movement when heated?

If the particles are able to move more in a gas when heated and the least in a solid, which of the 3 states of matter would you expect to **** increase the most in size?

If you heat a solid, the particles vibrate around a fixed point, due to the bonds which hold the particles in place, so there is only limited expansion of a solid substance.

In a liquid, it is a similar story where there are still weak bonds limiting the movement of particles.

In a gas the particles are free to move and increase in speed as the gas is heated which leads the largest increase in mass.

If a gas is held in a container with a fixed size and is therefore unable to expand when heated what does this cause an increase of?