gas

Gases

Three states of matter exist—solid, liquid, and gas. Solids have a definite shape and volume. Liquids have a definite volume, but take the shape of the container. Gases have no definite shape or volume.

Water is an example of a substance that can exist in all forms of matter. Ice is solid, water is liquid, and steam is gaseous. The particles in a solid are closely packed and held in fixed positions.

Mixtures and compounds Hydrogen and oxygen are both gases. Together, as a mixture, hydrogen and oxygen can react and form water. Water is a compound of hydrogen and oxygen. The hydrogen and oxygen have joined together to form the new substance water.

yes stone is an example of matter as matter is defined as anything g that has mass and occupies space.

About 99 percent of your body is made up of atoms of hydrogen, carbon, nitrogen and oxygen. You also contain much smaller amounts of the other elements that are essential for life. The hydrogen atoms in you were produced in the big bang, and the carbon, nitrogen and oxygen atoms were made in burning stars.

Matter is anything that has mass and takes up space. It’s hard for kids to understand the concept that air has mass. Air seems like nothing! And things that are filled with air seem so light.

Matter is anything that has mass and takes up space. Although air has mass, a small volume of air, such as the air in the balloons, doesn’t have too much. Air just isn’t very dense. We can show that the air in the balloon has mass by building a balance.

Air looks invisible because it sends very little color to our eyes. Most objects seem to have color because they absorb some light wavelengths, or colors, and reflect others back to us. Air is a mixture of gases, mainly nitrogen and oxygen, with small molecules that are far apart.

If we could see “air” to any significant degree — and not just the smog, water vapor, etc suspended in it at times, the — it would look BLACK as the large layer of air above us would block all of the sunlight. In such an environment, we likely would never have developed eyes even.

While water is not visible, it does bend light. This is called refraction. You can see this when you reach into an aquarium or any body of water.

Water isnt invisible but it is clear though slightly coloured. It is clear because the atoms in it do not absorb or scatter much visible light. This contains some special molecules that absorb blue light leaving only red light to be transmitted and scattered.

The water is in fact not colorless; even pure water is not colorless, but has a slight blue tint to it, best seen when looking through a long column of water. The blueness in water is not caused by the scattering of light, which is responsible for the sky being blue.

For instance, water does indeed absorb some red light (that is why the ocean is blue), and water does indeed reflect some light (that is why there is glare from the sun on the water’s surface), but for the most part we can think of water as a clear material because transmission/refraction dominates.

If something is clear it is known as transparent. This measn that instead of reflecting light light just passes straight through it. Clear isn’t really a colour – if something is clear it doesn’t absorb or reflect any light – for something to have a colour it must absorb and/or reflect light.

That’s not a color because by definition it is the absence of opacity. It’s not only not a color, it’s totally orthogonal to colors. Any color can be “clear”, meaning transparent or translucent, or opaque, meaning the opposite.

The color you see is the only color reflected. If almost all light is absorbed we see black, if almost all light is transmitted we see a transparent object. Colors appear on the electromagnetic spectrum. There’s ROYGBIV and then it fades into the unseen spectrum.