Chemistry Vocab
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| States that matter is neither created nor destroyed. | Law of Conversion of Mass
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| A change from one state (solid or liquid or gas) to another without a change in chemical composition. | Physical Change
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| A change that occurs when one or more substances change into entirely new substances with different properties. | Chemical Change
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| A substance that cannot be decomposed into simpler substances by chemical means. | Element
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| A combination of chemical symbols and numbers to represent a substance | Chemical Formula
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| A molecule composed only of two atoms of the same element. | Element (Diatomic) Molecule
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| A molecule made of multiple different elements. | Compound Molecule
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| A representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products. | Chemical Equation
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| A process that changes one set of chemicals into another set of chemicals. | Chemical Reaction
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| The elements or compounds that enter into a chemical reaction. | Reactants (in a chemical equation)
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| The elements or compounds produced by a chemical reaction. | Products (in a chemical equation)
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| 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)
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| 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)
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| A compound that consists of positive and negative ions. | Ionic Compound
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| A chemical compound formed by the sharing of electrons | Covalent Compound
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| The attraction between positive and negative electrons and their properties are conductivity and reactivity | Metallic Compound
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| A chemical reaction in which two or more simple substances combine to form a new, more complex substance | Synthesis
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| A chemical reaction that breaks down compounds into simpler products | Decomposition
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| When one element replaces another element in a compound | Single Replacement
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| A chemical reaction where two elements in different compounds trade places | Double Replacement
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