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 ...

GCU CHM 113 Exam 1 Questions & Answers 2024/2025 1 atm = - ANSWERS760mmHg Gas Constant Equation - ANSWERSR=0.0821 L*atm*mol*K Avagadro's Number - ANSWERS6.022*10^23 mol 0 degrees Celsius = - ANSWERS273.15 Kelvin Kilo (k) - ANSWERS1,000 or 1*10^3 Mega (M) - ANSWERS1,000,000 or 1*10^6 Giga (G) - ANSWERS1,000,000,000 or 1*10^9 Tera (T) - ANSWERS1,000,000,000,000 or 1*10^12 Meters in kilometers - ANSWERS1000m = 1km Deci (d) - ANSWERS0.1 or 1*10^-1 Centi (c) - ANSW...

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 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...

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...

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...

(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...

Exp 2- 25.00 mL of an unknow liquid were measured three times. The mass of each of the 25.00 mL samples were 36.137, 36.241, 36.098 g. Calculate the density of each sample and average value of the density. - 1.) 36.137 g/ 25.00 mL= 1.445 g/mL 2.) 36.241 g/ 25.00 mL= 1.450 g/mL 3.) 36.098 g/ 25.00 mL= 1.444 g/mL Average 1.445+ 1.450 + 1.444= 4.339 4.339/3= 1.446 g/mL Exp 2- Consider a stone column 3.00 ft in diameter and 10.00 ft high. What is its mass in pounds if the density is 3.50 g/...

Chemistry is... Ans:the study of matter Matter is... Ans:anything that takes up space and has mass Physical properties = Ans:are those which can be observed without changing the substance into something else Chemical properties = Ans:are those which are observed by changing one substance into another Hypothesis : Ans:an educated guess about the relationship between independent and dependent variables Independent variable : Ans:is a factor that's intentionally varied by the experiment...