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Chemistry Vocabulary

TermDefinition
Atom Smallest piece of matter that has the same properties of the element it is in.
Proton A positive subatomic particle in the atoms nucleus is the identity of the element and atomic number.
Neutron A negative subatomic particle in the atoms nucleus has no change and most of the mass.
Electron A negative subatomic particle spinning outside the nucleus of an atom. Tiny!
Periodic Table Of Elements A chart that organizes all the elements by the atomic numbers and properties.
Valence Electron The electron in the outer level of an atom that causes atoms to bond together.
Chemical Bond an interaction that holds 2 atoms.
crystal lattice repeating 3 dimensional pattern that forms when ions bond.
covalent bond the type of bond that forms when atoms share electrons instead of transferring them.
metallic bond a special bond between metal ions and electrons that swim around them.
chemical formula a shorthand way to use chemical symbols and numbers to represent a substance.
subscript small number to the right of the element that shows how many atoms there are of the element.
coefficient the large number that multiplies atoms of the elements.
chemical equation uses symbols to show the relationship between the reactants and the products.
synthesis reaction when two or more substances combine to create one new compound
decomposition a reaction where a single compound breaks down to form 2 simpler substances
single displacement reaction one element replaces the other element in compound leaving a new compound and 1 element.
double displacement reaction the 2 metal ions in 2 compounds switch places in a chemical reactions
indicator will change colors in the presence of an acid or a base.
Created by: QveenD