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chem ss for Dethoff

law of conservation of mass The law implies that mass can neither be created nor destroyed, although it may be rearranged in space and changed into different types of particles.
physical change Physical changes are changes affecting the form of a chemical substance, but do not change the chemical composition of that substance.
chemical change Chemical changes occur when a substance combines with another to form a new substance.
element A molecule consisting of only one type of atom.
chemical formula A faster way of showing atoms molecules and equations.
element(diatiomic)molecule A molecule where all the atoms are the same.
compound molecule A molecule where there are different types of atoms.
chemical equation A way of describing a chemical reaction.
chemical reaction A process that leads to the transformation of one set of chemical substances to another.
reactants(in a chemical equation) Substances that go through a chemical change.
products(in a chemical equation) Substances that result from a chemical change.
coefficient(in a chemical equation) The number placed next to the symbol the represents how many of that atom there is.
subscript(in a chemical equation) How many atoms of each element are in the equation.
ionic compound A compound where two or more ions are held next to each other by electrical attraction.
covalent compound A molecule formed by covalent bonds, in which the atoms share one or more pairs of valence electrons.
metallic compound A compound that contains one or more metal elements.
synthesis The combining of two or more elements that have seperate properties into one molecule.
decomposition The seperation of a molecule into simpler forms.
single replacement When one element takes the place of another element in a compound.
double replacement When two elements take the place of two elements in a compound.
Created by: M0308244



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