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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 and subatomic particle in the atoms nucleus. Is the identity of the element and atomic number.
Neutron A neutral subatomic particle in the atoms nucleus.... has no charge and most of the mass.
Electron A neutral subatomic particle spinning outside the nucleus of an atom. Tiny!
Element The simplest forms of 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 an 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 is formed when electrons are transferred 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.
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 valance electrons in an atom or chemical bond.
Compound A set of electrons that are chemically bonded and changed into new substances. Naci=Salt.
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 elements.
Coefficient The large number that multiplies atoms of the element.
Chemical Equation Uses symbols to show the realationship between the reactants and the products
Molecule 2 or more atoms joined in a definite ratio. Keeps phys. & chem. properties.
Diatomic Molecule A molecule made of 2 atoms of the same element.
Reactant A substance or molecule that starts a chemical reaction.
Product The substance that forms as a result of a chemical reaction.
Law of Conservation of Mass States that matter is neither created nor destroyed in a chemical reaction.
Synthesis When two or more substances combine to create one new compound.
Synthesis Reaction When two or more substances combine to create a new compound.
Decomposition Reaction A reaction where a single compound breaks down to form 2 simpler substances.
Single-Displacement Reaction One element places another 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.
Indicator Will changes colors in the presence of an acid or base change.
Created by: Mahki