particles expand hence takes up more space(flattening)
You can't compress water when it is a liquid. That's why hydraulic systems work the way they do.
It cools, and when it is compressed, it warms
Its density increases.
It is compressed and occupies a smaller volume.
water vapor happens or gas flows into the air
Yes, water vapor is a gas and all gasses can be compressed.
The density increases..
TRICK QUESTION: There is no such thing as compressed water. Water is not subject to compression.
it's compressed and is ignited
When a balloon is submerged underwater, it will shrink in size due to the pressure of the water pushing in on it. This is because the air inside the balloon is compressed by the surrounding water, causing the balloon to deflate.
with compressed water
Nothing special. But depending on the compression techniques used, it's a wasted effort, since it won't save more space having a compressed file on a compressed file system.