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www.livescience.com/53304-gases.html

Gas is a state of matter that has no fixed shape and no fixed volume. Gases have lower density than other states of matter, such as solids and liquids. There is a great deal of empty space between ...

en.wikipedia.org/wiki/Gas

If the pressure-dependence is neglected (and possibly the temperature-dependence as well) in a particular application, sometimes the gas is said to be a perfect gas, although the exact assumptions may vary depending on the author and/or field of science. For an ideal gas, the ideal gas law applies without restrictions on the specific heat.

www.scienceforkidsclub.com/gas-facts.html

Compound gases come next and they have a combination of different atoms. Carbon monoxide is a compound gas. The air we breathe is made up of different types of gases. There is approximately 78% nitrogen, 21% oxygen with 1% argon and a couple of other gases too. Natural gas is another type of gas and has mostly methane inside of it.

www.sciencekids.co.nz/sciencefacts/earth/gas.html

Enjoy our range of fun gas facts for kids. Learn about the interesting uses and cool properties of gas as well as a variety of facts about natural gas, noble gases, air, the ozone layer and much more. Like solids and liquids, gas is a common state of matter. Pure gases are made up of just one atom ...

www.thoughtco.com/definition-of-gas-604478

A gas is defined as a state of matter consisting of particles that have neither a defined volume nor defined shape. It is one of the four fundamental states of matter, along with solids, liquids, and plasma. Under ordinary conditions, the gas state is between the liquid and plasma states.

www.factmonster.com/dk/encyclopedia/science/gases

Gases are all around us, but although many, such as perfume, can be smelt, most gases are invisible. Like liquids, gases can flow but, unlike solids or liquids, gases will not stay where they are put. They have no set shape or volume, and they expand in every direction to fill completely whatever container they are put into.

www.kiwico.com/.../02/02/kid-friendly-science-experiments-gas

10 Kid-Friendly Experiments on the Science of Gas Get hands-on with gas as a state of matter in these ten fun science experiments for kids. You’ll discover the awesome fizzy reactions and the incredible power gasses like air have!

www.thoughtco.com/types-of-solids-liquids-and-gases-608354

Types of Solids, Liquids, and Gases. ... She has taught science courses at the high school, college, and graduate levels. Updated January 29, 2019 Naming examples of solids, liquids, and gases is a common homework assignment because it makes you think about phase changes and the states of matter.

www.sciencelearn.org.nz/resources/607-solids-liquids-and-gases

Water is the only common substance that is naturally found as a solid, liquid or gas. Solids, liquids and gases are known as states of matter. Before we look at why things are called solids, liquids or gases, we need to know more about matter.

www.sciencekids.co.nz/gamesactivities/gases.html

Solids, Liquids and Gases. Learn about solids, liquids and gases as you experiment with the conditions that change them from one form to another in this fun, interactive science activity. Water is a common example as it exists in all three forms, you’ve no doubt seen it as ice, liquid water and steam.