Electron dot diagram Study guides, Class notes & Summaries

what substances make up water? - Answer-hydrogen and oxygen what substances make up an iron pot - Answer-iron atom - Answer-Basic unit of matter electron dot diagram - Answer-a diagram that shows the element symbol surrounded by dots representing valence electrons energy level - Answer-A particular region where electrons can orbit a nucleus. ion - Answer-an atom or molecule that has an electrical charge because it has gained or lost electrons isotope - Answer-one of several forms of the s...

TEST BANK FOR ORGANIC CHEMISTRY WITH BIOLOGICAL TOPICS 6th EDITION ISBN : 9781260325294 ALL CHAPTERS INCLUDED. Chapter 1 1 MULTIPLE CHOICE QUESTIONS Topic: Atomic Orbitals 1. In quantum mechanics a node (nodal surface or plane) is: A) a place where Ψ is negative. B) a place where Ψ is positive. C) a place where Ψ = 0. D) a place where Ψ 2 is large. E) a place where Ψ 2 is negative. Ans: C Topic: Atomic Orbitals, Molecular Orbitals 2. When the 1s orbitals of two hydroge...

MULTIPLE CHOICE QUESTIONS Topic: Atomic Orbitals 1. In quantum mechanics a node (nodal surface or plane) is: A) a place where Ψ is negative. B) a place where Ψ is positive. C) a place where Ψ = 0. D) a place where Ψ2 is large. E) a place where Ψ2 is negative. Ans: C Topic: Atomic Orbitals, Molecular Orbitals 2. When the 1s orbitals of two hydrogen atoms combine to form a hydrogen molecule, how many molecular orbitals are formed? A) 1 B) 2 C) 3 D) 4 E) 5 Ans: B Topic: A...

Atom - The basic unit of matter. An atom is the smallest particle of the element that still has all the properties of the element. Atoms are made up of smaller particles called protons, neutrons, and electrons. the smaller electrons orbit around a central nucleus of protons and neutrons. Atomic Number - The number of protons in the nucleus of an atom. Elements are distinguished from one another by their atomic numbers. For example, any atom with 2 protons is an atom of helium. The...

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...

AC HPAT Chemistry Questions All Correct Answers single displacement - ANSWER- A + BC --> AC + B double displacement - ANSWER- AB + CD --> AD + CB precipitate - ANSWER- A solid that forms from a solution during a chemical reaction. energy level - ANSWER- Energy levels (also called electron shells) are fixed distances from the nucleus of an atom where electrons may be found. What is the atomic number of an element - ANSWER- number of protons What is the mass number of an el...

Which number is equal to the number of protons in the atom? - Answer-Atomic Number No charge at all? - Answer-Neutrons (n0) Negative Charge? - Answer-Electrons (e-) Radioactive? - Answer-The atoms decay over time and emit radiation. Which isotope, Li-6 or Li-7 is the most common isotope of Lithium? - Answer-Li-7 Isotope? - Answer-An Element has the same number of protons, but different numbers of neutrons. What is a nucleus? - Answer-The center of the atom. What does Li Mean? - Answer-Lit...

Covalent Bonds Exam Questions and Answers All Correct Covalent bond - Answer-The chemical bond formed when two atoms share electrons What atoms usually form covalent bonds? - Answer-Nonmetal atoms. Ionic bonds usually form between metal and nonmetal atoms. Describe how nonmetals bond. - Answer-They bond by sharing electrons. Atoms of some nonmetal elements can bond with each other. Two fluorine atoms can react by sharing a pair of electrons. By sharing electrons, each fluorine atom has...

Chapter 1-Structure and Bonding:Acids and Bases 1. How many total valence electrons are represented in the following electron configuration? 1s22s22px2 2py2 2pz1 or 1s22s22p5 a. 1 b. 3 c. 5 d. 7 e. 9 ANS: D Instructions: Write valid Lewis (electron-dot) structures for each formula below. Show all electrons as dots and show all nonbonding electrons. 2. Write: CH3CH2OH ethanol ANS: 3. The structure of urea is shown below. Fill in any nonbonding valence electrons that are missing from the l...

Element Builder- Gizmos Questions and Answers Rated A What are elements Pure substances that are made up of one kind of atom What are atoms Tiny particles of matter that are made up of three particles: protons, neutrons, and electrons Where is the proton located In the center of the atom, called the nucleus Which particles are located in the nucleus Protons and neutrons Which particles orbit around the nucleus Electrons What causes the element name to change The number of protons that you a...