I believe you might be referring to Group 1A (also known as Group 1 or the alkali metals) on the periodic table of elements. This group includes the following elements: These elements are all highly reactive metals with low melting and boiling points. They are called “alkali” metals because they react with water to form…
Oxygen is a chemical element with the symbol O and atomic number 8. It is a member of the chalcogen group on the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds. By mass, oxygen is the third-most abundant element in…
Nitrogen is a chemical element with the symbol N and atomic number 7. It is a colorless, odorless, and tasteless gas that makes up about 78% of the Earth’s atmosphere by volume. Nitrogen is an essential element for life, as it is a component of amino acids, which are the building blocks of proteins. Nitrogen…
The oxidation state of an element is the number of electrons that the atom has gained or lost when it forms a chemical bond with another atom. This number can be positive or negative, depending on whether the element has lost or gained electrons, respectively. The chemical reactivity of an element depends on its oxidation…
Sodium chloride, also known as table salt, is a chemical compound with the formula NaCl. It is an ionic compound consisting of a sodium cation (Na+) and a chloride anion (Cl-). Sodium chloride is one of the most widely used and important chemicals in the world, with a variety of industrial, agricultural, and culinary applications.…
Oxides are compounds formed by the combination of oxygen with other elements. The general characteristics of oxides depend on the type of element that they are combined with. Here are some general characteristics of different types of oxides: In summary, the general characteristics of oxides depend on the type of element they are combined with,…
Acids are a class of chemical compounds that typically have a sour taste and can turn blue litmus paper red. They are also known to react with certain metals to produce hydrogen gas and with bases to form salts and water. Acids are characterized by the presence of hydrogen ions (H+) when dissolved in water,…
Halogens are a group of elements in the periodic table that includes fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). They are highly reactive nonmetals that have seven valence electrons, and therefore tend to form compounds by gaining or sharing one electron to complete their octet. Halogens have a variety of industrial…
Dihydrogen, also known as hydrogen gas or molecular hydrogen, is a colorless, odorless, and highly flammable gas with the chemical formula H2. It is the lightest and most abundant element in the universe, constituting about 75% of its elemental mass. In its natural state, dihydrogen is a diatomic molecule, meaning that it consists of two…
“Use” and “structure” are two words with different meanings, but they can be used together in different contexts. In general, “use” refers to the act of utilizing something for a particular purpose or function. For example, you can use a computer to write a document, use a hammer to drive a nail into a piece…
