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It depends what you mean by simplest. If you mean the smallest forms of matter, they are microscopic not invisible. If you mean basic components of matter such as quarks, atoms, molecules and so on, the answer is again that they are subatomic to microscopic in size and so not able to be seen without aid, yet not invisible. The only things that are truly invisible neither absorb nor scatter light, and therefore we can not see them in the visible light spectrum, like dark matter.
What else can I help you with?
What is the simplest form of matter with one kind of atom?
an element
What is the reason astronomers believe there is a huge amount of invisible dark matter in the milkyway What do you think is probably the nature of dark matter?
The Milky Way rotates way too fast for the amount of known matter; it must have several times its observable mass, to rotate so fast.The nature of this dark matter is not known yet. It is probably some kind of as-yet unknown particle, that interacts through gravity, but that doesn't, or hardly does, react with electromagnetic wave (thus making it invisible, or almost invisible).The Milky Way rotates way too fast for the amount of known matter; it must have several times its observable mass, to rotate so fast.The nature of this dark matter is not known yet. It is probably some kind of as-yet unknown particle, that interacts through gravity, but that doesn't, or hardly does, react with electromagnetic wave (thus making it invisible, or almost invisible).The Milky Way rotates way too fast for the amount of known matter; it must have several times its observable mass, to rotate so fast.The nature of this dark matter is not known yet. It is probably some kind of as-yet unknown particle, that interacts through gravity, but that doesn't, or hardly does, react with electromagnetic wave (thus making it invisible, or almost invisible).The Milky Way rotates way too fast for the amount of known matter; it must have several times its observable mass, to rotate so fast.The nature of this dark matter is not known yet. It is probably some kind of as-yet unknown particle, that interacts through gravity, but that doesn't, or hardly does, react with electromagnetic wave (thus making it invisible, or almost invisible).
What things are matter?
matter must have mass and volume.though it may be visible or invisible.
What colour is dark matter?
Dark matter is invisible. It doesn't interact with light.
What kind of boundary does the line labeled x represent?
An invisible boundary, probably.An invisible boundary, probably.An invisible boundary, probably.An invisible boundary, probably.
What color is dark matter?
Dark matter is not visible to the naked eye and does not emit, absorb, or reflect light, so it does not have a color like visible matter. It remains invisible and undetectable through traditional telescopes, which is why it is called "dark" matter.
What kind of angle is at x?
An invisible angle!
What are the best vegetables to plant?
the invisible kind
What kind of quadrangle is this shape?
An invisible quadrangle!
What ideas did Dalton teach?
That matter was made of invisible particles
What state of matter is sometimes invisable?
Gas can sometimes be visible with the example of smoke from a cigarette but it is also invisible as in the case of carbon monoxide which could not be seen or smelled.
What is invisible matter?
Any matter that does not produce or reflect photons of light that are between 750-380 nanometers in wavelength. Or it could be dark matter which we still don't know what exactly is dark matter.
