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Chemistry

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.
Neutron A neutral subatomic particle in the atoms nucleus... has no charge and most of the mass.
Electron A negative subatomic particle spinning outside of an atom. Tiny!
Element The simplest forms of all matter that contains only one type of atom.
Periodic Table of Elements A chart that organizes all the elements by atomic number and properties.
Valence Electron The electron in the outer level of one atom that causes atoms to bond together.
Chemical Bond An interaction that holds 2 atoms together.
Chemical Bonding The joining of atoms to form new substances.
Ionic Bond Formed when electrons are transferred from one atom to another.
Ion Charged particle or atom that has gained or lost electrons.
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 the electrons that swim around them.
Malleability Metals can be pounded into thin sheets.
Ductility Metals can be stretched and drawn into wires.
Conductivity Electrical Conductivity - Metal can conduct or carry electricity through wires. Thermal Conductivity - Metal can conduct or carry heat in order to cook food.
Electron Dot Diagram An easy way to show the valence electrons in an atom or chemical bond.
Compound A set of elements that are chemically bonded and changed into new substances NaCl=Salt
Chemical Formula A short hand way to use chemical symbols and numbers to represent a substance.
Chemical Equation Uses symbols to show the relationship between the reactants and the products. C+O2 -> CO2.
Synthesis Reaction When two or more substances combine to create one new compound
Decomposition Reaction A reaction where a single compound breaks down to form two simpler substances
Single Displacement Reaction One element replaces another ion compound leaving a new compound and 1 element.
Double Displacement Reaction The 2 metal ions in 2 compounds switch in a chemical reaction.
Created by: rhodesj