Honors Chemistry Final Exam Questions and Answers 100% Pass

Honors Chemistry Final Exam Questions and Answers 100% Pass the law that states that mass cannot be created or destroyed in ordinary chemical and physical changes - Answer- law of conservation of mass the law that states a chemical compound always contains the same elements in exactly the same proportions by weight or mass - Answer- law of definate proportions the law that states that when two elements combine to form two or more compounds, the mass of one element that combines with a given mass of the other is in the ratio of small whole numbers - Answer- law of multiple proportions the smallest component of an element having the chemical properties of the element - Answer- atom the interaction that binds protons and neutrons, protons and protons, and neutrons and neutrons together in a nucleus - Answer- nuclear forces the number of protons in the nucleus of an atom - Answer- atomic number an atom that has the same number of protons as other atoms of the same element do but that has a different number of neutrons - Answer- isotope the sum of the number of neutrons and protons that make up the nucleus of an atom - Answer- mass number An atom that is identified by the number of protons and neutrons in its nucleus - Answer- nuclide a unit of mass that describes the mass of an atom or molecule - Answer- atomic mass unit weighted average of the atomic masses for the isotopes of an element - Answer- average atomic mass the SI base unit used to measure the amount of a substance whose number of particles is the same as the number of atoms of carbon in exactly 12g of carbon-12 - Answer- mole used to find molecules. the number of atoms or molecules in one mole (6.022 x 10^23) - Answer- Avogadro's number the mass in grams of 1 mol of a substance - Answer- molar mass A form of energy that exhibits wavelike behavior as it travels through space - Answer- Electromagnetic radiation