Ocean tides are caused by mostly wind but can also be caused by earthquakes
Pushing down a piston in an airtight cylinder would tend to increase the pressure in the system since the particle collision and collisions with the walls are now more frequent. Also, pushing further, the gas would undergo a phase change from gas to a liquid.
The properties of substances can be used to put the into groups.
<h3>Grouping of substances</h3>
In chemistry, it is often necessary to put substances into groups based on similarity in their properties. This is what led to the idea of a periodic table of elements.
Similarly, when we have unknown substances, we can group them according to the similarities in their properties.
Learn more about properties of substances: brainly.com/question/19886211