All matter has mass, and takes up space. Any other observed physical phenomena is defined as energy.
When something lacks hue, it is referred to as achromatic or neutral.
A colourless opal is known as a "milky" or "white" opal. It lacks the play-of-color that is characteristic of other opals, resulting in a milky or whitish appearance.
matter
Matter has mass. (do not confuse with weight, weight is the force exerted by gravity on matter) A Higgs field is theorized to give matter mass, however such a field has not been found.
Matter is anything that has mass and takes up space. You can tell if something is matter by observing if it has a physical presence, occupies space, and has weight. If it has these characteristics, then it is considered matter.
A characteristic of matter is that it has mass.
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When something lacks hue, it is referred to as achromatic or neutral.
answer
Solubility is a characteristic of the solvent.
Cold is not a matter, it is a characteristic of a matter (a low temperature).
Melting and boiling points are characteristic properties of matter.
Yes, density is an intrinsic physical characteristic, specific for each material, a characteristic of matter. It's one of its properties. The density of matter is the mass of matter in a given unit of volume of that matter (It's mass per unit volume).
A characteristic is, something that a person does for a living.
property
property
It is a chemical property. A chemical property is a characteristic of matter that allows it to change to a different type of matter.