Basic Chemistry 2025

Basic Chemistry 2025 atom - ansthe smallest particle of an element that retains the properties of the element atomic number - ansidentifies a specific element; equals the number of protons in an atom of each element chemical formula - ansindicates the number and types of atoms in a molecule chemical reaction - ansindicates the formation of new substances from previous substances chemical reaction - ansinteraction of substances that lead to the formation of new substances compound - anssubstance containing two or more elements chemically combined in a fixed ratio covalent bond - ansoccurs when atoms share electrons double bond - ansa covalent bond in which four valence electrons are shared between two atoms electron - anssubatomic particle having a negative charge; not in nucleus but surrounds it element - ansa pure substance that cannot be broken down into other substances by chemical reactions inorganic compound - anssubstance made of two or more elements, none of which is carbon ion - ansatoms that have lost or gained electrons ionic bond - ansoccurs when atoms transfer electrons to other atoms isotope - ansatoms having the same numbers of protons but different numbers of neutrons matter - ansanything that occupies space and has mass molecule - ansatoms that are held together by covalent bonds neutron - anssubatomic particle without a charge; found in nucleus nucleus - ansprotons and neutrons together; make up the center of an atom organic compound - anssubstance made of two or more elements, one being carbon