vocab
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| law of conservation of mass | The Law of Conservation of Mass dates from Antoine Lavoisier's 1789 discovery that mass is neither created nor destroyed in chemical reactions
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| physical change | Physical changes are changes affecting the form of a chemical substance, but do not change the chemical composition of that substance.
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| chemical change | During a chemical change, substances are changed into different substances.
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| element | In chemistry, an element is a pure substance that cannot be broken down into any simpler substances by chemical methods.
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| chemical formula | A chemical formula or molecular formula is a way of expressing information about the atoms that constitute a particular chemical compound.
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| element (diatomic) molecule | diatomic molecules are molecules composed only of two atoms, of either the same or different chemical elements.
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| compound molocule | A molecule is formed when two or more atoms join together chemically. A compound is a molecule that contains at least two different elements. All compounds are molecules but not all molecules are compounds
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| chemical equation | A chemical equation is the 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.
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| chemical reaction | chemical reaction is a process that leads to the transformation of one set of chemical substances to another.
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| reactants (chemical equation) |
A substance participating in a chemical reaction, especially a directly reacting substance present at the initiation of the reaction.
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| products (chemical change) | A product is a substance that is formed as the result of a chemical reaction.
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| coefficient (chemical change) | a coefficient is a multiplicative factor in some term of an expression (or of a series); it is usually a number, but in any case does not involve any variables of the expression.
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| subscript (chemical change) | A subscript or superscript is a number, figure, symbol, or indicator that appears smaller than the normal line of type and is set slightly below or above it
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Or sort by any of the columns using the down arrow next to any column heading.
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