Question

what evidence is there that all state of matter have mass

Answer 1

Answer:

Matter is the "stuff" that makes up the universe everything that takes up space and has mass is matter.

All matter is made up of atoms, which are in turn made up of protons, neutrons and electrons

Answer 2

Matter itself must have mass irrespective of its state.

Matter is anything that has mass and occupy space. Matter exists in three states;

• Solid
• Liquid
• Gas

In all these states of matter, matter is made up of "stuff".  For instance, if a solid, liquid or gas is introduced into an empty bag attached to a scale, the bag will move downwards and the scale will record an increase in mass.

This shows that matter in solid, liquid or gaseous state all have mass.

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