click below
click below
Normal Size Small Size show me how
Chemistry
Vocabulary
Term | Definition |
---|---|
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. Is the identity of the element and atomic number. |
Neutron | A neutral subatomic particle in the atom's nucleus...has no charge and most of the mass. |
Electron | A negative subatomic particle spinning outside the atom's nucleus. 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 bond together. |
Chemical Bond | An interaction that holds two 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 of 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 |
Malleability | Metals can be pounded into thin sheets |
Ductility | Metals can be stretched and drawn into wires. |
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. |
Compound | A set of elements that are chemically bonded and changed into new substances. NaCl=salt |
Molecule | 2 or more atoms joined in a definite ratio. |
Diatomic Molecule | A molecule made of 2 atoms of the same element. |
Chemical Formula | A shorthand way to use chemical symbols and numbers to represent a substance |
Subscript | Smaller number to the right of the element that shows how many atoms there are in the element. |
Coefficient | The larger number to the left of the element that multiplies atoms of the element. |
Chemical Equation | Uses symbols to show the relationship between the reactants and the products. |
Reactant | A substance or molecule that starts a chemical reaction. |
Product | The substance or molecule that starts a chemical equation. |
Law of Conservation of Mass |