CH4-6 Study guides, Class notes & Summaries

What is the difference between cations and anions? - Cation is the loss of electrons, the atom becomes more positive. Anion is the gain of electrons, the atom becomes more negative. Differentiate between mass number and atomic number. - Mass number- number of protons and neutrons. Atomic number- number of protons What are valence electrons and what is their significance? - Valence electrons are electrons in the outermost shell of an atom. They are important in determining the bonds that the...

CHEM 104 MODULE 1- MODULE 6 EXAM 2022/2023 100%CORRECT QUESTIONS AND ANSWERS - PORTAGE LEARNING. Portage Learning CHEM 104 Module 1 Exam: Question 1 In the reaction of gaseous N2O5 to yield NO2 gas and O2 gas as shown below, the following data table is obtained: → 4 NO2 (g) + O2 (g) 1. Using the [O2 ] data from the table, show the calculation of the instantaneous rate early in the reaction (0 secs to 300 sec). 2. Using the [O2 ] data from the table, show the calculation of the instan...

Biochemistry 9th Edition TEST BANK Campbell Farrell McDougal 1. The tendency for an atom to attract electrons to itself in a chemical bond is called a. polarity. b. electronegativity. c. hydrophilicity d. electrophilicity. 2. If atoms with greatly differing electronegativities form a bond, that bond will be a. polar. b. nonpolar. c. amphipathic. d. acidic. 3. Many of the properties of water can be accounted for by the...

ATI RN PEDIATRIC PROCTOR EXAM 2019 1. A nurse is preparing to assess a 4-year old child’s visual acuity. Which of the following actions should the nurse plan first? • Use a tumbling E chart for the assessment • Position the child 4.6 meters (15 feet) from the chart • Assess both eyes together first, then each eye separately • Test the child without glasses before testing with glasses 2. A nurse is providing discharge teaching to a parent of a child who has juvenile idiopathic ...

Test Bank for Chemistry 10th Edition Zumdahl Full Chapters Complete Questions and Answers. Chapter 02 - Atoms, Molecules, and Ions Copyright Cengage Learning. Powered by Cognero. Page 1 1. The first people to attempt to explain why chemical changes occur were a. alchemists b. metallurgists c. physicians d. physicists e. the Greeks ANSWER: e POINTS: 1 DIFFICULTY: Easy REFERENCES: 2.1 QUESTION TYPE: Multi-Mode (Multiple choice) HAS VARIABLES: False KEYWORDS: Chemistry | early atomic...

Chapter 6: Calculate the molar Mass the following 1. CH4 C = 1 x 12g/mol = 12 g/mol H = 4 x 1 g/mol = 4 g/mol CH4 = 16 g/mol 2. H2O H = 2 x 1 g/mol = 2 g/mol O = 1 x 16 g/mol = 16 g/mol H2O = 18 g/mol 3. MgBr2 Mg = 1 x 24 g/mol = 24 g/mol Br = 2 x 80 g/mol = 160 g/mol MgBr2 = 184 g/mol 4. H3PO4 H = 3 x 1 g/mol = 3 g/mol P = 1 x 31 g/mol = 31 g/mol O = 4 x 16 g/mol = 64 g /mol H3PO4 = 98 g/mol 5. Ca(OH)2 Ca = 1 x 40 g/mol = 40 g/mol O = 2 x 16 g/mol = 32 g...

2023 AQA GCSE COMBINED SCIENCE: TRILOGY 8464/C/2H Chemistry Paper 2H Question Paper & Mark scheme (Merged) June 2023 [VERIFIED] Materials For this paper you must have: • a ruler • a scientific calculator • the periodic table (enclosed). Instructions • Use black ink or black ball-point pen. • Pencil should only be used for drawing. • Fill in the boxes at the top of this page. • Answer all questions in the spaces provided. • If you need extra space for your answer(s), ...

Test Bank for Chemistry 10th Edition Zumdahl Full Chapters Complete Questions and Answers. Chapter 02 - Atoms, Molecules, and Ions Copyright Cengage Learning. Powered by Cognero. Page 1 1. The first people to attempt to explain why chemical changes occur were a. alchemists b. metallurgists c. physicians d. physicists e. the Greeks ANSWER: e POINTS: 1 DIFFICULTY: Easy REFERENCES: 2.1 QUESTION TYPE: Multi-Mode (Multiple choice) HAS VARIABLES: False KEYWORDS: Chemistry | early atomi...

Test Bank of Organic Chemistry 4th Edition By Janice Smith All Chapters 1-31| Complete Solutions (LATEST VERSION) Assured A+. Chapter 1: Structure and Bonding 1. What is the ground-state electronic configuration of a carbon atom? A) 1s2 , 2s2 , 2p5 B) 1s2 , 2s2 , 2p2 C) 1s2 , 2s2 , 2p6 D) 1s2 , 2s2 , 2p4 2. What is the ground-state electronic configuration of a fluorine atom? A) 1s2 , 2s2 , 2p2 B) 1s2 , 2s2 , 2p3 C) 1s2 , 2s2 , 2p4 D) 1s2 , 2s2 , 2p5 3. What is ...

TEST BANK FOR Organic Chemistry 12th Edition By T. W. Graham Solomons, Craig B. Fryhle, Scott A. Snyder Chapter 1-25 ( VERIFIED) Package title: Solomons Test Bank Course Title: Solomons 12e Chapter Number: 1 Question type: Multiple choice 1) Which of the following best describes the origin of carbon atoms? a) The Big Bang b) amino acids found on meteorites c) byproduct of chemical fusion in stars d) gradual decay of radioactive isotopes of nitrogen e) All of these choices. Answer: C T...