Gases

From your About Chemistry Guide, this is a concise description of ideal gas properties and equations for the Ideal Gas Law, Boyle's Law, Law of Charles and Gay-Lussac, and Dalton's Law.

Get definitions and examples of the main states of matter: solids, liquids, gases, and plasma.

Here are simple instructions for preparing common gases from ordinary chemicals. The gases include carbon dioxide, oxygen, nitrogen, methane, nitrous oxide, chlorine, and several others.

Get information about the properties shared by the noble or inert gases.

The halogens are a specific group of nonmetals with some distinctive properties.

Learn about chemical composition of the Earth's air. Percentages of the most common compounds are given, according to volume.

This is the density of air at STP.

Here is an example of an ideal gas problem where the volume of the gas is held constant.

Do you understand the ideal gas laws? Here's a ten question multiple choice quiz you can take to test your knowledge.

Here are some worked examples of Ideal Gas Law chemistry problems plus links to formulas for working gas problems and related chemistry tools and resources.

Get handy facts for the element nitrogen.

These are instructions for preparing ammonia gas from ammonium chloride and calcium hydroxide in water.

The Barking Dog chemistry demonstration is based on an exothermic reaction between nitrous or nitric oxide and carbon disulfide. Ignition of the mixture results in a bright blue chemiluminescent flash accompanied by a characteristic barking sound.

Can a candle burn in the absence of gravity? Here's the answer to this frequently asked question about fire.

These are instructions for preparing carbon dioxide gas from calcium carbonate and hydrochloric acid.

These are instructions for preparing chlorine gas from potassium permanganate and hydrochloric acid.

Have you ever wanted to color fire? Here are simple, nontechnical instructions for making your own colored flames. Add extra interest to your fireplace or campfire!

Colored smoke is easy to make and requires few ingredients. Here's a list of some colored smoke formulations to try.

It's easy to make brilliant green fire. This cool chemistry project only takes two household chemicals.

Take this multiple choice quiz to test your understanding of the states of matter.

You can easily make a smoke bomb using inexpensive materials to produce safe smoke.

Sulfur hexafluoride is a non-toxic, invisible gas that you can use to perform interesting chemistry demonstrations. Breathe it in and make your voice much deeper when you talk. Pour it into a container and float an airplane or a ship on 'nothing'.

Learn what the greenhouse effect is and how it is related to climate.

The elemental composition of the universe and the earth's crust are very different! How different? Take a look...

What is the state of matter of fire or flame? Is it a liquid, solid, or gas? Learn the answer to this question and get information about the chemistry of fire.

Learn how to perform the white smoke chemistry demonstration, in which a cloud of ammonium chloride crystals are produced from reacting ammonia and hydrochloric acid.

A fire extinguisher is an important piece of safety equipment. You can make your own fire extinguisher using common kitchen ingredients to learn how fire extinguishers work and to learn about gases.

Carbon dioxide is a gas found in air, your bloodstream and many consumer products. The solid form of CO2 is dry ice. Do you know whether or not carbon dioxide is poisonous? Get the facts on carbon dioxide toxicity.