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Chemistry
Atom | Atom is the smallest particle of any element that retains the properties of the element. |
Atomic Number | The number of protons in the nucleus of an atom, which identifies the element to which the atom belongs. |
Anions | Negative ions |
Compound | A pure substance that is composed of two or more atoms chemically combined in a specific way. |
Covalent Bounding | A compound formed when non metallic atoms share electrons to form covalent compounds. |
binary covalent compound | A compound that contains two non metal element joined together by one or more covalent bounds. |
Ionic bounding | The bound that forms as a result of the attraction between positively and negatively charged ions. |
Ionic compound | Compound that are composed of positive ions and negative ions. |
ions | Electrically charged particles created when atoms gain or lose electrons. |
Molecule | A group of atoms in which the atoms are bound together by sharing one or more pairs of electrons. |
Valence electrons | the electrons in the valence shell of a atom. |
Valence | the outer shell that has electrons. |
Bohr diagram | A diagram that shows the arrangment of an element's subatomic particles and the number of electrons in each shell surrounding the nucleus of a atom. |
Electrons | Subatomic particle that have a -1 (negative) electric charge. |
Isotopes | Different atoms of a particular element that have the same number of protons but different numbers of neutrons. |
Mass number | the Total Number of protons and neutrons found in the nucleus of an atom. |
chemical families | Alkali metals, Alkaline earth metals. Transition metals. Halogens. Noble gases. |
Most reactive chemical family | Alkali metals |
Least reactive | Noble gases |