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Elements & Molecules

Molecules, atoms, and chemical equations

Law of Conservation of Mass A law that states that mass can neither created nor destroyed
Physical Change A change that affects the form of a chemical substance but doesn't change the chemical composition for that substance
Chemical Change A change that occurs when a certain substance is formed into an another substance by a chemical reaction
Element The chemically simplest substance that cannot be broken down any further
Chemical Formula A way of expressing information about the atoms that constitute a particular chemical compound
Element (Diatomic) Molecule Molecules composed only of two atoms, of either the same or different chemical elements
Compound Molecule Group of two or more elements that are bonded together
Chemical Equation A symbolic representation of a chemical reaction where the reactant entities are given on the left hand side and the product entities on the right hand side
Chemical Reaction A process that leads to the transformation of one set of chemical substances to another
Reactants Substances such as compounds and elements that are combined to create a product
Products The result of substances changing into different substances
Coefficient A numerical measure of a physical or chemical property that is constant for a system under specified conditions
Subscript Placed to the lower right of the element's symbol, this shows the number of atoms of an element in a molecule
Created by: L0709277