Honors Chemistry Final Exam Questions And Answers Already Graded A+

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-moleused to find molecules. the number of atoms or molecules in one mole (6.022 x 10^23) - AnswerAvogadro'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 - AnswerElectromagnetic radiation All of the frequencies or wavelengths of electromagnetic radiation - Answer-Electromagnetic spectrum The distance between corresponding points on adjacent waves - Answer-Wavelength