Ch 4 the atom - Study guides, Class notes & Summaries

PHSC 1033 Exam 3 Pretest Questions with Correct Answers Compounds that have the same molecular formula but different structural formulas are called structural, or constitutional, A) isomers. B) derivatives. C) congeners. D) isotopes. E) progeners. - Answer-A) isomers. Organic chemistry studies chemical compounds that contain at least one atom of A) nitrogen. B) oxygen. C) carbon. D) hydrogen. E) silicon. - Answer-C) Carbon Which atoms normally have 3 covalent bonds to it? A)...

BIO 203 Practice Questions and Answers 2024/2025 Fully Solved 100%; Concordia University 1. Diet is a a. practice of restricting calorie intake. b. technique for limiting empty calorie intake. c. method of reducing portion sizes. d. usual pattern of food choices. 2. Which of the following conditions is not one of the top 5 leading causes of death in the United States? a. Cancer b. Kidney disease c. Heart disease d. Stroke 3. The nutrients that provide energy are a. carbohydrat...

CH. 1 Organizational levels of the body - Answer-Cell, Tissue, Organ, Organ System Cell and tissue types - Answer-1. Neurons / Nervous Tissue 2. Muscle cells / Muscle Fibers 3. Epithelial cells / Epithelium 4. Connective tissue Functions of the organ systems - Answer-See table 1.1 Internal and external environments - Answer-*Internal: Immediate environment of most cells* - Includes plasma and interstitial fluid (ISF) *External: External side of epithelial body barrier* - Includes ...

WGU C785 EXAM [QUESTIONS AND ANSWERS GRADED A] [LATEST VERSION 2023/2024] What is the basic structure of an amino acid? What do they look like? - CORRECT ANSWER amino group (NH2 or NH3), carboxyl group (COO or COOH), alpha carbon (C), and variable group How do you identify the 3 different types of side chains: non-polar/hydrophobic, polar, and charged? - CORRECT ANSWER Non-polar/hydrophobic - end with CH or "can't have" water. Polar - end with OH, SH, or NH. Charged - end with a...

2 OCR 2023 SECTION A You should spend a maximum of 25 minutes on this section. Write your answer to each question in the box provided. 1 Which statement explains the trend in boiling points down the halogens group? A Covalent bonds become stronger. B Induced dipole–dipole interactions (London forces) become stronger. C Ionic bonds become stronger. D Permanent dipole–dipole interactions become stronger. Your answer [1] 2 A hydrocarbon contains 85.71% carbon by mass. What is the em...

BSC1010 CH. 2 EXAM QUESTIONS AND VERIFIED ANSWERS RATED PASSED!!! LATEST UPDATE matter anything that takes up space and has mass element is a substance that cannot be broken down to other substances by chemical reactions compound is a substance consisting of two or more elements in a fixed ratio what elements make up 96% of life Carbon, hydrogen, oxygen, and nitrogen what elements mostly make up the remaining 4% calcium, phosphorus, potassium, and sulfur Trace elements are those re...

Chapter 1 Carbon and Its Compounds CHECKPOINT PROBLEMS Practice Problem 1.1 a) S — 1s2 2s2 2p6 3s2 3p4 b) Cl — 1s2 2s2 2p6 3s2 3p5 c) Na+ — 1s2 2s2 2p6 1-2 Copyright © 2018 Nelson Education Limited Practice Problem 1.2 a) Count valence electrons. Build a basic bonding framework and account for electrons used. Add remaining electrons and check for formal charges. The molecule has a lone pair on the nitrogen. All other electrons are bonding electrons. b) Count valence electrons. Build a bas...

WGU C785 Final Exam With All The Correct Answers What is the basic structure of an amino acid? What do they look like? - Answer ️️ -amino group (NH2 or NH3), carboxyl group (COO or COOH), alpha carbon (C), and variable group How do you identify the 3 different types of side chains: non-polar/hydrophobic, polar, and charged? - Answer ️️ -Non-polar/hydrophobic - end with CH or "can't have" water. Polar - end with OH, SH, or NH. Charged - end with a charge what kinds of bonds do e...

Chapter 1 Carbon and Its Compounds CHECKPOINT PROBLEMS Practice Problem 1.1 a) S — 1s2 2s2 2p6 3s2 3p4 b) Cl — 1s2 2s2 2p6 3s2 3p5 c) Na+ — 1s2 2s2 2p6 1-2 Copyright © 2018 Nelson Education Limited Practice Problem 1.2 a) Count valence electrons. Build a basic bonding framework and account for electrons used. Add remaining electrons and check for formal charges. The molecule has a lone pair on the nitrogen. All other electrons are bonding electrons. b) Count valence electrons. Build a bas...

BSC 1010C Ch.3 Exam Questions Correctly Answered. Each water molecule is joined to _____ other water molecules by ____ bonds. 1. four ... hydrogen 2. two ... hydrogen 3. two ... polar covalent 4. three ... ionic 5. four ... polar covalent - CORRECT ANSWER 1. four ... hydrogen The unequal sharing of electrons within a water molecule makes the water molecule _____. 1. change easily from a liquid to gaseous form 2. have a low surface tension 3. hydrophobic 4. polar 5. ionic - ...