Term | Definition |
Electron Dot Diagram | An easy way to show the valence electron in an atom or chemical bond |
Compound | A set of elements that are chemically bonded and changed into new substances NaCl= salt |
Ductility | metals that can be stretched and drawn into into wires |
Malleability | metals can be pounded into thin sheets |
Metallic bond | A special bond between metal ions and the electrons that swim around them |
Conductivity | metal can conduct electricity and heat |
Covalent bond | The type of bond that forms when atoms share electrons instead of tranferring them |
Crystal lattice | Repeating 3 dimensial pattern that forms when ions bonds |
Atom | smallest peice 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 a atomic number |
Neutron | A neutral subatomic particle in the atoms 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 organized all the elemensts by atomic number and properties |
Valence Electrons | The electron in the outer most 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 from one atom to another |
Ion | Charged particle of atom that gained or lost electrons |
Chemical Formula | A shorthand way to use chemical symbols and numbers to represent a substance (H20) |
Chemical Equation | Uses symbols to show the relationship between the reactants and the products C+02->CO2 |
Subscript | small number to the right of the element that shows how many atoms there are of this element |
Coefficient | The large number that multiplies atoms of the element 2Cl+3Na |
Molecule | 2 or more atoms joined in a definite ratio keeps physical and chemical properties |
Diatomic Molecule | A molecule made of 2 atoms of the same element (ex oxygen atoms. |
Reactant | A substance or molecule that starts chemical reactions |
Product | The substance that forms as a result of a chemical reaction |
Law of Conversation of Mass | State that matter is neither created nor destroyed in a chemical reaction |
Synthesis Reaction | When two or more substances combine to create one new compound |
Decomposition Reaction | A reaction here a single compound breaks down to form 2 simpler substances |
Single- Displacement Reaction | One element replaces another element in compound and 1 element |
Double-Displacement Reaction | The 2 metal ions in compound switch places in a chemical reacton |
Indicator | Will change colors in the presence of an acid or a base |