Chm 1 Study guides, Class notes & Summaries

CHM 1045 Final Exam Questions & Answers 2024/2025 chemistry - ANSWERSthe study of matter, its composition, its properties, and its interactions macroscopic properties - ANSWERSlength, mass, visible properties microscopic properties - ANSWERSproperties we can't see; need methods of indirect measurement scientific method - ANSWERSobservations, hypothesis, testing/collecting data, draw conclusions theory - ANSWERSdevelops as people around the world independently consistently find ...

___ are forms of matter - Substances ____ _____ provides information about percentages of different isotopes of each element - Mass spectrometer ____ + ____ are polar covalent molecules that dissociate into ions when introduced to water - Acids, bases _____ charge = # of protons > # electrons - positive _____ in an experiment are all the factors that the experimenter attempts to keep the same - Constant ______ charge = # protons < # electrons - negative "-ate" ending means - mor...

CHM 1032 Final Exam Review Questions & Answers 2024/2025 A 35−g sample of potassium completely reacts with chlorine to form 67 g of potassium chloride. How many grams of chlorine must have reacted? - ANSWERS32 How much heat must be absorbed by 125 g of ethanol to change its temperature from 21.5 ∘C to 34.8 ∘C? - ANSWERS4.02kJ An unknown metal is suspected to be gold. When 2.8 J of heat are added to 5.6 g of the metal, its temperature rises by 3.9 ∘C. Are these data consist...

kinetic energy Ans:energy of motion potential energy Ans:stored energy endothermic Ans:absorbs heat exothermic Ans:releases heat deposition Ans:gas to solid sublimation Ans:solid to gas condensation Ans:gas to liquid evaporation Ans:liquid to gas physical properties Ans:the page is white, ice melts at 0 degrees, iron weighs 10 grams chemical properties Ans:the copper coin acquired a greenish coating over the years extensive properties Ans:depend on quantity (piece of iron we...

CHM 320 Exam 1 Questions & Answers 2024/2025 This type of error gives results that are consistently high or low with respect to the "true" value. A) Systematic error B) Absolute error C)Random Error D) Relative error - ANSWERSA) Systematic error The standard deviation describes what aspect of a set of measurement's results? A) accuracy B) Precision C) Systematic error D) Selectivity - ANSWERSB) Precision When performing the Grubbs test which of the following would allow y...

chemistry Ans: the study of matter and the changes it undergoes scientific method Ans: systematic approach to research hypothesis Ans: temporary explanation for the observation law Ans: concise statement of a relationship between phenomena that is always the same conditions or standards theory Ans: principle that explains a basis of facts or laws based on them homogeneous Ans: constant composition heterogeneous Ans: nonuniform composition physical properties Ans: observed withou...

(CO3)2- - carbonate ion (NO3)- - nitrate (PO4)3- - phosphate ion (SO3)2- - sulfite ion (SO4)2- - sulfate ion 1 Cal = ? cal - 1000 cal 1 cal = ? J - 4.18 J 1 ft = ? in - 12 in 1 gal = ? qt - 4 qt 1 in = ? cm - 2.54 cm 1 lb = ? g - 454 g 1 lb = ? oz - 16 oz 1 mi = ? ft - 5280 ft1 qt = ? L - 0.946 L 1 qt = ? pt - 2 pt 1 ton = ? lbs - 2000 lbs 1 yd = ? ft - 3 ft actinides - the 14 elements with atomic numbers from 90 (thorium, Th) to 103 (lawrencium, Lr) Ag - silver Ag+ - silver io...

___________ and _________ are inversely proportional; _________ and _______ are directly proportional - frequency and wavelength ; frequency and energy 1st Law of Thermodynamics - delta-U = q + W heat transferred + work done by system on surroundings - W is positive if work is done on the system (by surrounding) - W is negative if work is done by the system A system doing work pushes back on surroundings, it ___________. When surroundings do work, pushes back on system, it _________ . - e...

CHM 1020 Exam 1 with All Questions and Answers/ CHM 1020 Final Exam Latest New Version Updated with All Questions and 100% Correct Answer

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