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Tyler Luman's Vocab

Chemistry

QuestionAnswer
Law of Conservation of Mass The law of conservation of mass, also known as the principle of mass/matter conservation, states that the mass of an isolated system (closed to all matter and energy) will remain constant over time.
Physical Change Physical changes occur when objects or substances undergo a change that does not change their chemical composition.
Chemical Change Chemical changes occur when a substance combines with another to form a new substance.
Element A chemical element is a substance that cannot be broken down by chemical means. Elements are defined by the number of protons they possess.
Chemical Formula A chemical formula or molecular formula is a way of expressing information about the atoms that constitute a particular chemical compound.
Element Molecule Diatomic molecules are molecules composed only of two atoms, of either the same or different chemical elements.
Compound Molecule A compound regarded as a union of molecules retaining their identities.
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.
Chemical Reaction A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.
Reactants A substance that participates in a chemical reaction, esp a substance that is present at the start of the reaction.
Products A product is a substance that is formed as the result of a chemical reaction.
Subscript 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.
Ionic Compound In chemistry, an ionic compound is a chemical compound in which ions are held together in a lattice structure by ionic bonds.
Covalent Compound A covalent compound is a compound in which the atoms that are bonded share electrons rather than transfer electrons from one to the other.
Metallic Compound A metallic compound is a compound that contains one or more metal elements.
Synthesis the combining of the constituent elements of separate material or abstract entities into a single or unified entity ( opposed to analysis, ) the separating of any material or abstract entity into its constituent elements.
Decomposition Chemical decomposition, analysis or breakdown is the separation of a chemical compound into elements or simpler compounds. It is sometimes defined as the exact opposite of a chemical synthesis.
Single Replacement Single replacement reactions, or single displacement reactions, describe reactions in which a more active element replaces a less active element in a compound.
Double Replacement A double replacement reaction is a chemical reaction where two reactant ionic compounds exchange ions to form two new product compounds with the same ions.
Created by: l0806002
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