Vocabulary


 * Define and give good examples from LAB, your READINGS IN THE TEXT, and your LIFE. **


 * Atom = The smallest particle of an element that has the chemical properties of that element **


 * Element = An essential building block of all items **


 * Molecule = A group of atoms that are held together by covalent bonds so they move as a unit. **


 * Compound = Mixture of two or more elements **


 * periodic table = **a tabular arrangement of the chemical elements according to atomic number as based on the periodic law


 * group = **(chemistry) two or more atoms bound together as a single unit and forming part of a molecule


 * Period = **In the periodic table of the elements, elements are arranged in a series of rows so that those with similar properties appear in vertical columns. This arrangement reflects the periodic recurrence of similar properties as the atomic number increases


 * Noble gases = **This collection of elements make up Group 0 in the periodic table. They were known as inert gases for many years but that has changed with the reports of noble gas compounds. ...


 * Proton = **a stable particle with positive charge equal to the negative charge of an electron


 * Neutron = **an elementary particle with 0 charge and mass about equal to a proton; enters into the structure of the atomic nucleus


 * Electron = **an elementary particle with negative charge


 * Atomic number = **the order of an element in Mendeleyev's table of the elements; equal to the number of protons in the nucleus or electrons in the neutral state of an atom of an element


 * Atomic mass = **(chemistry) the mass of an atom of a chemical element expressed in atomic mass units


 * Isotope = **Has a different atomic mass


 * Ion = ** An atom with a negative


 * Valence electrons = **an electron in the outer shell of an atom which can combine with other atoms to form molecules


 * Covalent bond = A pair of electrons shared by two atoms **


 * Ionic bond = A bond that steals electrons **


 * Atomic model = **


 * Phase change = A change of an items phase **


 * Physical change - A change where the item looks different but is reversible **


 * Chemical change = A change where the chemical structure varies **


 * Cyclic causality - A cycle **


 * Domino causality - A liner change **


 * MIXTURE - A combo of two or more substances that do not combine chemicly but remain the same induviduial substance **


 * suspension = A mixture in which the different parts are identifiable substamces **


 * solution = A solution that is the same ** **throughout**


 * solute - In a solution that is do solved in a ** **solvent**


 * solvent - **


 * dissolve - **


 * catalyst = **


 * reactants= **


 * products = **


 * conservation of mass = **


 * endothermic reaction - **


 * exothermic reaction - **