CHEM 105 Exam 1 Dr. Woodfield BYU with correct answers 100% 2026

CHEM 105 Exam 1 Dr. Woodfield BYU with correct answers 100% 2026 Visible light spectrum - Correct Answer 400-700 nm Wavelength and Frequency - Correct Answer inversely proportional unit for frequency - Correct Answer Hertz Equation for percent yield - Correct Answer actual yield/theoretical yield x 100 how to find limiting reactant - Correct Answer Find the number of moles of each of the reactants being reacted, the one which produces the least number of moles is the limiting reactant. Theory - Correct Answer Concise and well tested explanation of why a natural phenomenon occurs Law - Correct Answer Summary of accepted facts of nature Chemistry - Correct Answer The study of matter; atoms, molecules, compounds and their structure, properties, and changes they undergo Matter - Correct Answer Anything that occupies space and has mass Compound - Correct Answer 2 or more elements chemically bonded together Molecule - Correct Answer two or more atoms chemically bonded together. Atom - Correct Answer the smallest particle of an element that retains the chemical properties of the element. 20.6 - Correct Answer 3 sig figs 0.004 - Correct Answer 1 sig fig 0.0000090 - Correct Answer 2 sig figs 400 - Correct Answer 1 sig fig 400. - Correct Answer 3 sig figs Another zero 400.0 - Correct Answer 4 sig figs Significant figures for X or / - Correct Answer The answer has the number of significant figures as the measurement with the fewest significant figures Significant Figures for + and - - Correct Answer The answer has the same number of decimal places as the measurement with the fewest decimal places Thompson Experiment - Correct Answer Shot charged particles at a phosphorus screen. RESULTS: Calculated the charge to mass ratio of an electron. Milligan Oil Drop Experiment - Correct Answer Applied electrons to drops of oil, applied electric field to suspend the drops of oil: RESULTS: Calculated the mass of the small charged particles (electron).