Chemistry Final Exam Review 100% Updated!!

Lab Safety Rules of Science - ANSWER-Add acid to water because if you add water to acid, it can boil over and explode. -Wear goggles with side shields to protect your eyes. -Reagents-Container -It is not safe to eat, drink or put on makeup because it can contaminated. -Hold the specimen at a safe distance and wafe the chemical. DO NOT SMELL THE CHEMICAL! -Wear long sleeves, old clothes, long pants and aprons. -Long hair-Tie back long hair Jewelry-Take off all jewelry and watches Contact lenses-take them off -If you get chemicals in your eyes, Use eyewash station and wash eyes for 15 min. -If you get chemicals on your clothing,use the safety shower. -No horseplay in lab. Physical Change and Two Examples - ANSWERThe changes in which the identity of a substance doesn't change. -Ice melting -Water evaporating Chemical Change and Two Examples - ANSWERThe identities of substances change and new substances form. -Milk souring -Gasoline Burning The Four Evidences of Chemical Change - ANSWER1. The Evolution of a Gas 2. The Formation of a Precipitate 3. The release or absorption of Energy 4. A color change in the reaction system Measurement involves an amount and a unit of measure. The amount is a number. That is known as a____________. - ANSWERquantitative property. Mass and example - ANSWERA measure of the amount of matter in an object example-grams Volume and example - ANSWERAnything that takes up space example-liters