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Science Vocab Terms

Science Vocabulary

QuestionAnswer
Law of Conservation of Mass The fundamental principle that matter cannot be created nor destroyed
Physical Change Reversible change in the physical properties of a substance, such as size and shape
Chemical Change An irreversible chemical reaction that
Element a component or constituent of a whole or one of the parts into which a whole may be resolved by analysis:
Chemical Formula a representation of a substance using symbols for its constituent elements
Element (Diatomic) Molecule A molecule with 2 of the same type of element
Compound Molecule A molecule with two or more different types of elements
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 When to or more elements react to each other
Reactants The elements on the left side of a chemical equation
Products The molecules in the right side of an equation
Coefficients Determines how many molecules exist.
Subscript Determines how many atoms of that element exist
Ionic Compound Compound molecule consisting of at least 1 metal and nonmetal pair
Covalent compound Compound molecule consisting of two or more nonmetals, and no metals
Metallic Compound Compound molecule consisting of two or more metals, and no nonmetals
Sysnthesis The combining of elements of separate materials into a single or unified entity
Decomposition The breaking down (decaying) of particles to return nutrients back into the earth
Single Replacement When an ion or element moves from one compound to another
Double Replacement a chemical reaction where two reactant ionic compounds exchange ions to form two new product compounds with the same ions
Created by: Z0700839
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