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Kelly's chem vocab

Chemistry

QuestionAnswer
Law of Conservation of Mass the mass of substances produced (products)by a chemical reaction is always equal to the mass of the reacting sudstances (reactants)
Phisical Change A change from one state (solid, liquid, or gas) to another without changing chrmical composition
Chamical Change any process determined by the atomic and moleculer composition and structure of the substances involved
Element a pure chemical substance consisting of one type of atom distinguished by its atomic number
Chemical Formula a representation of a substance using symbols for its constituent elements
Element (Diatomic) Molecule Diatomic molecules are molecules composed only of two atoms, of either the same or different chemical elements
Chemical Equation A symbolic representation of what happens when chemicals come in contact with one another
Chemical Reaction 1.A process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction
Reactants (in a chemical equation) Substances initially present in a chemical reaction that are consumed during the reaction to make products
Products (in a chemical equation) The compounds that are formed when a reaction goes to completion.
Coefficient (in a chemical equation) A coefficient is a number placed in front of a term in a chemical equation to indicate how many molecules (or atoms) take part in the reaction
Subscript (in a chemical equation) the number of atoms of that kind there are in one molecule
Ionic compound An ionic compound is a compound formed by ions bonding together through electrostatic forces
Covalent Compound A covalent bond is a form of chemical bonding that is characterized by the sharing of pairs of electrons between atoms, and other covalent bonds
Metallic Compound A metallic compound is a compound that contains one or more metal elements.
Synthesis 2.The combination of ideas to form a theory or system.
Decomposition Conversion or decay of degradable (or chemically unstable) material to simpler (or more stable) components or forms by the natural action of air, water, light, or microorganisms
Single Replacement is a type of oxidation-reduction chemical reaction when an element or ion moves out of one compound and into another. (One element is replaced by another in a compound.
Double Replacement a chemical reaction between two compounds where the positive ion of one compound is exchanged with the positive ion of another compound
Created by: h0404070
 

 



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