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science study 123

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QuestionAnswer
law of conservation of mass a fundamental principle of classical physics that matter cannot be created or destroyed in an isolated system
Physical change a usually reversible change in the physical properties of a substance, as size or shape:
Chemical change Chemistry . a usually irreversible chemical reaction involving the rearrangement of the atoms of one or more substances and a change in their chemical properties or composition, resulting in the formation of at least one new substance:
Element Chemistry . one of a class of substances that cannot be separated into simpler substances by chemical means
Chemical Formula a representation of a substance using symbols for its constituent elements
Element ( Diatomic ) molecule and Compound molecule the smallest physical unit of an element or compound, consisting of one or more like atoms in an element and two or more different atoms in a compound.
Chemical equation a representation of a chemical reaction using symbols of the elements to indicate the amount of substance, usually in moles, of each reactant and product
Chemical reaction A process in which atoms of the same or different elements rearrange themselves to form a new substance. While they do so, they either absorb heat or give it off.
Reactants any substance that undergoes a chemical change in a given reaction.
Products a substance obtained from another substance through chemical change.
Coefficient a number that is constant for a given substance, body, or process under certain specified conditions, serving as a measure of one of its properties:
Subscript Also called subfix. any character, number, or symbol written next to and slightly below another.
Created by: F1005035
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