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Chemistry Vocab

States that matter is neither created nor destroyed. Law of Conversion of Mass
A change from one state (solid or liquid or gas) to another without a change in chemical composition. Physical Change
A change that occurs when one or more substances change into entirely new substances with different properties. Chemical Change
A substance that cannot be decomposed into simpler substances by chemical means. Element
A combination of chemical symbols and numbers to represent a substance Chemical Formula
A molecule composed only of two atoms of the same element. Element (Diatomic) Molecule
A molecule made of multiple different elements. Compound Molecule
A representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products. Chemical Equation
A process that changes one set of chemicals into another set of chemicals. Chemical Reaction
The elements or compounds that enter into a chemical reaction. Reactants (in a chemical equation)
The elements or compounds produced by a chemical reaction. Products (in a chemical equation)
A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction. Coefficient (in a chemical equation)
A number in a chemical formula that tells the number of atoms in a molecule or the ratio of elements in a compound Subscript (in a chemical equation)
A compound that consists of positive and negative ions. Ionic Compound
A chemical compound formed by the sharing of electrons Covalent Compound
The attraction between positive and negative electrons and their properties are conductivity and reactivity Metallic Compound
A chemical reaction in which two or more simple substances combine to form a new, more complex substance Synthesis
A chemical reaction that breaks down compounds into simpler products Decomposition
When one element replaces another element in a compound Single Replacement
A chemical reaction where two elements in different compounds trade places Double Replacement
Created by: v0306460



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