Chem 120 final exam Study guides, Class notes & Summaries

How many bonds can nitrogen have? Which rule or principle should be used? A) Five bonds; octet rule. B) Three bonds; octet rule. C) Three bonds; the Hund's rule. D) Five bonds; the Aufbau Principle. correct answer: B When two hydrogen atoms meet, they will attract to each other and form a bond (and a H2 molecule). Why? A) Because electrons like to stay together. B) Because electrons like to be paired up. C) Because there is attraction between the electron in one hydrogen atom an...

CHEM 120 Final Exam 1 GRADED A+ (ACTUAL EXAM ) Questions and Answers (Solved) 1. define matter Answer: anything that has mass and takes up space 2. what is not considered matter? Answer: light, heat, electricity 3. definite shape, definite volume Answer: solid 4. indefinite shape, definite volume Answer: liquid 5. indefinite shape, indefinite volume Answer: gas 6. pure substance Answer: one substance; definite and constant composition; can't beseparated into 2 kinds of matter by p...

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CHEM 120 Final Exam Review (Latest 2023 - 2024) New Full Exam Questions and Answers ( Included ) 100% Correct 1. significant figures Answer: a digit that is either reliably known or closely estimated 2. Significant Figure Rules Answer: 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 never significant 4. Zeroes to the right of last non-zero digit ...

Chem 120 final exam questions and answers 2024.

CHEM 120 Final Exam Review (Version 2), CHEM 120: Introduction to General, Organic & Biological Chemistry with Lab, Verified and Correct Answers, Chamberlain College of Nursing.

Chem 120 Final Exam 2 GRADED A+ (ACTUAL EXAM ) Questions and Answers (Solved) 1. Dalton'sTheory Answer: All matter is composed of small invisible particles called atomsAll atoms of a given element are alike in mass and other properties The atoms of one element are different from atoms of all other elements 2. Law of Conservation of Mass Answer: Matter is neither created nor destroyed Atoms of one element cannot be changed into atoms of another element by chemical reactions 3. law of ...

CHEM 120 FINAL EXAM (PRACTICE PROBLEMS) QUESTIONS WITH 100% CORRECT ANSWERS

What is the correct order of melting points for the following alkanes, from highest to lowest temperature? correct answer: heptane > hexane > ethane > methane 2. Given an alkane that contains 25 carbon atoms. How many hydrogen atoms are present in its structure? a) correct answer: ) 52 3. Which of the following properly describes constitutional (structural) isomers? correct answer: compounds with the same molecular formula, but a different order of attachment of atoms 4. How...

Chem 120 final exam questions and answers 2024