Compressibility refers to the <u>physical property</u> of a substance which allows it to <u>reduce its volume when pressure or stress is applied.</u>
Since in <u>solids and liquids,</u> the constituting atoms or molecules are very <u>closely or densely packed together</u>. So the volume cannot be reduced further when pressure is applied.
<u>Therefore, the solids and liquids are said to be nearly incompressible.</u>
A boiling chip, boiling stone, porous bit or anti-bumping granule is a tiny, unevenly shaped piece of substance added to liquids to make them boil more calmly.
