1 Chemistry: The Science Of Change 2 Atoms And The Periodic Table 3 Quantum Theory And The Electronic Structure Of Atoms 4 Periodic Trends Of Elements 5 Ionic And Covalent Compounds 6 Representing Molecules 7 Molecular Geometry, Intermolecular Forces, And Bonding Theories 8 Chemical Reactions 9 Chemical Reactions In Aqueous Solutions 10 Energy Changes In Chemical Reactions 11 Gases 12 Liquids And Solids 13 Physical Properties Of Solutions 14 Entropy And Free Energy 15 Chemical Equilibrium 16 Acids, Bases, And Salts 17 Acid-base Equilibria And Solubility Equilibria 18 Electrochemistry 19 Chemical Kinetics 20 Nuclear Chemistry 21 Metallurgy And The Chemistry Of Metals 22 Coordination Chemistry 23 Organic Chemistry 24 Modern Materials expand_more
1.1 The Study Of Chemistry 1.2 Classification Of Matter 1.3 The Properties Of Matter 1.4 Scientific Measurement 1.5 Uncertainty In Measurement 1.6 Using Units And Solving Problems Chapter Questions expand_more
Problem 1.1QP Problem 1.2QP: Explain what is meant by the scientific method. Problem 1.3QP: What is the difference between a hypothesis and a theory? Problem 1.4QP: Classily each of the following statements as a hypothesis, law, or theory, (a) Beethoven's... Problem 1.5QP: Classify each of the following statements as a hypothesis, law, or theory. (a) The force acting on... Problem 1.6QP Problem 1.7QP Problem 1.8QP Problem 1.9QP: Classify each of the following as a pure substance, a homogeneous mixture, or a heterogeneous... Problem 1.10QP: What is the difference between a qualitative property and a quantitative property? Problem 1.11QP Problem 1.12QP Problem 1.13QP: Determine which of the following properties are intensive and which are extensive: (a) length, (b)... Problem 1.14QP: Determine whether the following statements describe chemical or physical properties. (a) Oxygen gas... Problem 1.15QP Problem 1.16QP: Determine whether each of the following describes a physical change or a chemical change: (a) A soda... Problem 1.17QP: Determine whether each of the following describes a physical change or a chemical change: (a) The... Problem 1.18QP: Name the SI base units that are important in chemistry, and give the SI units for expressing the... Problem 1.19QP: Write the numbers represented by the following prefixes: (a) mega-, (b) kilo-, (c) deci-, (d)... Problem 1.20QP: What units do chemists normally use for the density of liquids and solids? For the density of gas?... Problem 1.21QP: What is the difference between mass and weight? If a person weighs 168 lb on Earth, about how much... Problem 1.22QP Problem 1.23QP Problem 1.24QP Problem 1.25QP Problem 1.26QP Problem 1.27QP: The density of water at 40C is 0.992 g/mL. What is the volume of 2.50 g of water at this... Problem 1.28QP Problem 1.29QP Problem 1.30QP Problem 1.31QP Problem 1.32QP Problem 1.33QP: Indicate which of the following numbers is an exact number: (a) 50,247 tickets were sold at a... Problem 1.34QP Problem 1.35QP: Distinguish between the terms accuracy and precision. In general, explain why a precise measurement... Problem 1.36QP: Express the following numbers in scientific notation: (a) 0.000000027 (b) 356 (c) 47,764 (d) 0.096 Problem 1.37QP Problem 1.38QP Problem 1.39QP: Express the answers to the following calculations in scientific notation: (a) 0.0095 + (8.5 103)... Problem 1.40QP: Determine the number of significant figures in each of the following measurements: (a) 4867 mi, (b)... Problem 1.41QP Problem 1.42QP: Carry out the following operations as if they were calculations of experimental results, and express... Problem 1.43QP Problem 1.44QP: Three students (A, B, and C) are asked to determine the volume of a sample of water. Each student... Problem 1.45QP Problem 1.46QP Problem 1.47QP Problem 1.48QP: The density of the metal bar shown is 8.16 g/cm3. Determine its mass to the appropriate number of... Problem 1.49QP: The following shows an experiment used to determine the density of a gas. The evacuated bulb has a... Problem 1.50QP Problem 1.51QP Problem 1.52QP Problem 1.53QP: Carry out the following conversions: (a) 1.1 1022 g to atomic mass units, (b) 1.08 1029 kg to... Problem 1.54QP: The average speed of helium at 25C is 1255 m/s. Convert this speed to miles per hour (mph). Problem 1.55QP Problem 1.56QP Problem 1.57QP Problem 1.58QP Problem 1.59QP Problem 1.60QP Problem 1.61QP Problem 1.62QP Problem 1.63QP Problem 1.64QP Problem 1.65QP: The density of ammonia gas under certain conditions is 0.625 g/L. Calculate its density in g/cm3. Problem 1.66QP Problem 1.67QP: ADDITIONAL PROBLEMS 1.67 Using the appropriate number of significant figures, report the length of... Problem 1.68QP Problem 1.69QP: Winch of the following statements describe physical properties and which describe chemical... Problem 1.70QP Problem 1.71QP Problem 1.72QP: In determining the density of a rectangular metal bar, a student made the following measurements:... Problem 1.73QP Problem 1.74QP Problem 1.75QP Problem 1.76QP Problem 1.77QP Problem 1.78QP: The experiment described in Problem 1.77 is a crude but convenient way to determine the density of... Problem 1.79QP Problem 1.80QP: Lithium has a very low density (density = 0.53 g/cm3). What is the volume occupied by 1.20 103 g of... Problem 1.81QP Problem 1.82QP: Vanillin (used to flavor vanilla ice cream and other foods) is the substance whose aroma the human... Problem 1.83QP Problem 1.84QP Problem 1.85QP Problem 1.86QP Problem 1.87QP Problem 1.88QP: Magnesium is used in alloys, in batteries, and in the manufacture of chemicals. It is obtained... Problem 1.89QP Problem 1.90QP: The surface area and average depth of the Pacific Ocean are 1.8 10 km2 and 3.9 103 m,... Problem 1.91QP: Calculate the percent error for the following measurements: (a) The density of alcohol (ethanol) is... Problem 1.92QP Problem 1.93QP: Chalcopyrite contains 34.63 percent copper by mass. How many grams of copper can be obtained from... Problem 1.94QP Problem 1.95QP: One gallon of gasoline in an automobile's engine produces on the average 9.5 kg of carbon dioxide,... Problem 1.96QP Problem 1.97QP: The worlds total petroleum reserve is estimated at 2.0 1022 joules [a joule (J) is the unit of... Problem 1.98QP Problem 1.99QP Problem 1.100QP: Chlorine is used to disinfect swimming pools. The recommended concentration for this purpose is 1... Problem 1.101QP Problem 1.102QP Problem 1.103QP Problem 1.104QP Problem 1.105QP Problem 1.106QP Problem 1.107QP Problem 1.108QP Problem 1.109QP Problem 1.110QP Problem 1.111QP: In January 2009, the National Aeronautics and Space Administration (NASA) reported that a planet in... Problem 1.112QP Problem 1.113QP Problem 1.114QP Problem 1.115QP Problem 1.116QP: The composition of pennies has changed over the years, depending on a number of factors, including... format_list_bulleted