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water separate white light into visible light
Light.
Helium is stored under pressure, so a lot is packed into a small space. The gas in the balloon is at only slightly more than normal air pressure. The helium spreads out as it fills the balloons.
it will move randomly and quickly to fill the empty space in the container..that's how the matter in a gas do to fill the container.. P/s: gas is matter that has mass and occupied space.
Yes.
Gas spreads out to fill any type of container
Sound. Light. Smell.
In air, light reflects off gas molecules and hence, "fills more space".
How about air, or an odor, or sound.
water separate white light into visible light
Light.
It expands and spreads out, no matter is created.
Not by itself. However, tetraheda and octahedra together fill space.
No, because gas particles have space in between them so they occupy the given space. For example, when you boil a pot of water, after a while, you start to see steam coming out of the top. That is why it will fill the container. Liquids however, do not occupy the space given unless there are enough particles in the liquid to fill the space to the top.
sound . smell. light
To fill the space between the roll, and then to fill the space within your stomach!
I assume you are thinking about a "medium". If a wave travels through some "substance", such a substances is called a medium. In the case of light waves, or electromagnetic waves in general, the medium is empty space - nothing is required to fill the space.