Here we see highly interesting and instructive laboratory experiments filmed, dealing with the lightest of known substances, hydrogen. This gas is an important component part of the elements... Read allHere we see highly interesting and instructive laboratory experiments filmed, dealing with the lightest of known substances, hydrogen. This gas is an important component part of the elements. It forms 11.19 percent of water, and is a constituent of most organic compounds. It is a... Read allHere we see highly interesting and instructive laboratory experiments filmed, dealing with the lightest of known substances, hydrogen. This gas is an important component part of the elements. It forms 11.19 percent of water, and is a constituent of most organic compounds. It is also found in inorganic substances, principally acids. In its pure form, hydrogen is colorl... Read all