★ Must-know
Further detail
★ Must-know
Gases are compressible and expandable.
A gas has no shape of its own and occupies all the space available to it.
Further detail
1. A student sorts water, oil, sand, air, and water vapor by physical state. Which classifications are correct?
2. A liquid is poured into a narrow vessel and left undisturbed. Which statements describe its shape and free surface?
3. Which statement correctly characterizes whether a liquid can be grasped with the fingers?
What three physical states does matter occur in?
Solid, liquid, and gas.
What determines a solid’s shape?
Its own shape, independent of its container.
What shape does a liquid take when poured into a container?
The shape of its container.
Which part of a liquid is called its free surface?
The part in contact with air.
What is the shape and orientation of a liquid’s free surface?
Plane and horizontal.
What two volume changes can gases undergo?
They can be compressed and expanded.
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