CHEMISTRY 115 FINAL EXAMS QUESTIONS & ANSWERS 2024/2025

CHEMISTRY 115 FINAL EXAMS QUESTIONS & ANSWERS 2024/2025 definite; compressible - ANSWER-solids have a ________ shape and are not appreciably_________ compound - ANSWER-if matter is uniform throughout an cannot be separated into other substances by physical processes, but can be decomposed into other substances by chemical processes it is called_______ hypothesis - ANSWER-the initial or tentative explanation of an observation law - ANSWER-a concise verbal statement or mathematical equation that summarizes a broad variety of observations and experiences is called a ________ distillation - ANSWER-a separation process that depends on differing abilities of substances to form gases kilogram - ANSWER-si unit for mass Fahrenheit - ANSWER-a one degree of temperature differences is the smallest on the _______ temp scale m/s - ANSWER-a common English set of units for expressing velocity is miles/hour. The si unit for velocity is __________ C + 273 - ANSWER-celsius to kelvin 5/9 (F-32) - ANSWER-Fahrenheit to celsius (9/5)(C) +32 - ANSWER-celsius to Fahrenheit kggm/s^2 - ANSWER-si unit of force is the newton, which is _______ in base SI units momentum - ANSWER-the product of mass and velocity kggm/s - ANSWER-si unit for momentum Kelvin - ANSWER-si unit for temperature 0 degrees celsius - ANSWER-the freezing point of water at 1 atm pressure is _______ 0 kelvin - ANSWER-absolute zero refers to _________ compounds - ANSWER-the law of constant composition applies to __________ heterogeneous mixture - ANSWER-a combination of sand, salt, and water is an example of a _____________ homogeneous mixture - ANSWER-a small amount of salt dissolved in water is an example of a ________ heterogeneous mixture - ANSWER-can be easily separated into its components by simple techniques such as filtering or decanting gases only - ANSWER-state of matter that is compressible hetero and homo - ANSWER-which type of mixtures can the composition vary in element or compound - ANSWER-if matter is uniform throughout and cannot be separated into other substances by physical means the composition of a compound is always the same - ANSWER-the law of constant composition says _______________ intensive property - ANSWER-temp, melting point and density. do not depend on the amount of sample being examined extensive property - ANSWER-depend on the amount of sample; mass and volume liter - ANSWER-______ is equal to a cubic decimeter precision - ANSWER-refers to how close a measured number is to other measured numbers accuracy - ANSWER-refers to how close a measured number is to the true value removes ambiguity as to sig figs - ANSWER-expressing a number in scientific notation __________ kg - ANSWER-si unit for mass m - ANSWER-si unit for length s - ANSWER-si unit for time K - ANSWER-si unit for temperature Mole (mol) - ANSWER-si unit for the amount of substance ampere (A) - ANSWER-si unit for electric current candela (cd) - ANSWER-si unit for luminous intensity 10^9 (G) - ANSWER-Giga 10^6 (M) - ANSWER-Mega 10^3 (k) - ANSWER-Kilo continues...