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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 atom's nucleus... has no charge and most of the mass.
Electron A negative subatomic particle spinning outside the nucleus of an atom. Tiny!
Element The simplest forms of matter that contain 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 an atom that causes atoms to band together.
Chemical Bond A interaction that holds 2 atoms together.
Chemical Bonding The joining of atoms to form new substances.
Ionic Bond Is formed when electrons are transferred from one atom to another atom.
Ion Charged particle or atom that 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.
Ductility Metals can be stretched and drawn into wires.
Malleability Metals can be pounded into thin sheets.
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 & changed into new substances. NaCI=salt.
Chemical Formula A shorthand way to use chemical symbols and numbers to represent a substance. (H2O)
Chemical Equation Uses symbols to show the relationship between the reactants and the products.C+O2->CO2
Subscrict (H2O)-Small number to the right of the element that shows how many atoms there are of the element.
COEFFICIENT The large number that atoms of the element 2 (I+3NA)
Molecule 2 or more atoms joined in a definite ratio. Keeps phy. & chem. properties.
Diatomic Molecule A molecule made of 2 atoms of the same element-(ex.2 oxygen atoms).
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 2 simpler substances.
Single Displacement Reaction One 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 reaction.
Iondicator Will changes colors in the presence of a acid or a base.
Created by: studystacker526