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Science Vocab 2012 D

QuestionAnswer
The Definition of Compound Molecules a compound regarded as a union of molecules retaining their identities
The Definition of Law of Conservation of Mass is a relation stating that in a chemical reaction, the mass of the products equals the mass of the reactants.
The Definition of Physical Change is a type of change in which the form of matter is altered but one substance is not transformed into another.
The Definition of Chemical Change 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
The Definition of Element are chemically the simplest substances and hence cannot be broken down further using chemical methods.
The Definition of Chemical Formula a representation of a substance using symbols for its constituent elements
The Definition of Element (Diatomic) Molecule are molecules composed only of two atoms, of either the same or different chemical elements.
The Definition of Chemical Equation A symbolic representation of what happens when chemicals come in contact with one another
The Definition of Chemical Reaction A process in which one or more substances (reactants) are chemically changed into one or more new substances (products).
The Definition of Reactants A substance participating in a chemical reaction, especially a directly reacting substance present at the initiation of the reaction.
The Definition of Subscripts A distinguishing character or symbol written directly beneath or next to and slightly below a letter or number.
The Definition of Ionic Compound a chemical compound of cations and anions which are held together by ionic bonds in a lattice structure.
The Definition of Calvent Compound a molecule formed by covalent bonds, in which the atoms share one or more pairs of valence electrons
The Definition of Metallic Compound A metallic compound is a compound that contains one or more metal elements.
The Definition of Synthesis The combining of separate elements or substances to form a coherent whole.
The Definition of Decomposition The act or result of decomposing; disintegration
The Definition of Single Replacement A chemical reaction in which an element replaces one element in a compound.
The Definition of Double Replacement a chemical reaction between two compounds where the positive ion of one compound is exchanged with the positive ion of another compound
The Definition of Products A product is a substance that is formed as the result of a chemical reaction.
The Definition of Coefficient A number or letter put before a letter or quantity, known or unknown, to show how many times the latter is to be taken; as, 6x; bx; here 6 and b are coefficients of x.
Created by: Z0303423
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