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Chemistry 120 Q&A Exam Bundle

Unlock the secrets of Chemistry 120 with this comprehensive question and answer package. Designed to cover the breadth of the subject matter, from fundamental principles to advanced concepts, this resource is your ultimate tool for success.

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Chem 120 Final Exam Review Questions and Answers

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significant figures a digit that is either reliably known or closely estimated Significant Figure Rules 1. All non-zero digits are always significant 2. Zeroes between non-zero digits are always significant 3. Zeroes to left of first non-zero digit (either before or after decimal point) are n...

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Chem 120 Practice Test Questions and Answers

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Law of conservation mass *any system closed to all transfers of matter and energy (both of which have mass), the mass of the system must remain constant over time, as system mass cannot change quantity if it is not added or removed. Chemical change any change that results in the formation of new ...

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Chemistry 120 Quiz Questions and 100% Correct Answers

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What does a measurement consist of? A number and a unit What are the frequent measurements used in Chem 120-1? Temperature, Mass, Time, Volume, and Density What are the three main units for Temperature? Fahrenheit (*F), Celsius (*C), and Kelvin (K) What temperature unit is the absolute temp...

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Chem 120 Sample Questions and Answers

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What is a good scientific definition of a chemical? Chemical- any substance made up of one or more elements from the periodic table What is the difficulty in defining the chemical industry in terms of the periodic chart? The definition of a chemical is too broad. Too much would be included in the...

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Chemistry 120 Exam 1 (Chapters 1, 2, and 3 including Atomic Weight) Review Questions and Answers

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Chemistry the study of the composition, structure, properties, and reactions of matter Matter anything that has mass and occupies space Chemical a substance that always has the same composition and properties wherever it is found/wherever it comes from What is the scientific method? A metho...

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Chem 120 Final Exam Practice Questions and Answers

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molecular mass (molecular weight) the sum of the atomic masses, in atomic mass units, of all the atoms in the formula of a compound empirical formula a chemical formula showing the ratio of elements in a compound rather than the total number of atoms Avogadro's number (Mole) 6.02 x 10^23 p...

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Chem 120 Study Guide with Questions and Answers

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Equilibrium Occurs when rate of forward and reverse reaction are equal What does K equal Concentration of products over concentration of reactants What does reaction rates depend on? Mechanism of reaction, which is determined by number of colliding species What does a large K value entail? ...

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Chem 120 Exam Revision Questions with Complete Solutions

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define matter anything that has mass and takes up space what is not considered matter? light, heat, electricity definite shape, definite volume solid indefinite shape, definite volume liquid indefinite shape, indefinite volume gas pure substance one substance; definite and constant co...

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Chem 120 Final Exam Questions and Answers

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What is the correct order of melting points for the following alkanes, from highest to lowest temperature? heptane > hexane > ethane > methane 2. Given an alkane that contains 25 carbon atoms. How many hydrogen atoms are present in its structure? a) ) 52 3. Which of the following prop...

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Chem 120 Final Exam Study Aid with Questions and Answers

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ionic compounds -deals with charged particles -oppositely charged particles are attracted to each other -look for presence of metals and polyatomic ions molecular compounds -share electrons -nonmetals -no polyatomic ions unless its an acid Type I metals -ionic compounds -group 1A,2A,3A -...

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Chemistry 120 Test Questions and Answers

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formula weight Sum of all the masses, in AMU, present in one molecule of a molecular compound. molecular weight The sum of the atomic weights of a molecule. Avogadro's number 6.022 x 10²³ molar mass numerically equal to the formula weight in atomic mass units chemical formula notation...

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