Valence shell - Study guides, Class notes & Summaries

covalent bonds form based on Ans:the sharing of electrons that provides an octet of electrons for each most energetically stable elements in the periodic table Ans:noble gases noble gases are also referred to as Ans:inert gases octet rule Ans:all atoms should strive to have 8 electrons in their outermost shell to achieve the most energetically stable state valence electrons Ans:electrons found in the highest energy shell of an atom (aka the highest principle quantum number, n, shell...

Chemistry 101 Exam 1 WSU Questions and Answers Already Passed How many electrons can an orbital hold? 2 How many electrons does the second shell (n=2) hold? 8 How many electrons does the third shell (n=3) hold? 18 What do like charges do? Like charges (positive-positive or negative-negative) repel each other What is the generic valence level electron configuration for the halogens (group 7A)? ns2np5 What is the generic valence level electron configuration for the alkali met...

Define the following: isotope, valence shell, covalent bond, ionic bond CORRECT ANSWER Isotope- one of several atomic forms of an element, each with the same # of protons, but different number of neutrons Valence shell- the outermost energy shell of an atom, containing valence electrons involved in chemical reactions Covalent bond- bond where the electrons are shared Ionic bonds- a chemical bond resulting from the attractions between oppositely charged ions Hydrogen bonds result in.....

AP Biology Midterm Exam Study Guide A hypothesis must be these 2 things... Testable and falsifiable What are the levels of organization? Molecules, organelles, cells, tissues, organs, organ systems, organism, population, community, ecosystem, biome, biosphere What is a theory? Well-tested explanation that unifies a broad range of observations and evidence What is a hypothesis? A supposition or proposed explanation made on the basis of limited evidence as a starting point for ...

ULTIMATE AP Biology Exam Review Questions and Answers Graded A+ Define the following: isotope, valence shell, covalent bond, ionic bond Isotope- one of several atomic forms of an element, each with the same # of protons, but different number of neutrons Valence shell- the outermost energy shell of an atom, containing valence electrons involved in chemical reactions Covalent bond- bond where the electrons are shared Ionic bonds- a chemical bond resulting from the attractions between op...

m   1. Which of the following is the mRNA start codon in most cases? A. UAA B. AGU C. AUG D. UGA 2. Which of the types of RNA is the smallest? A. mRNA B. tRNA C. rRNA D. 3. Which of the following is not considered a pyrimidine? A. C B. T C. U D. G 4. Which of the following is paired correctly? A. A-G B. C-G C. A-U D. G-T 5. Which of the following characterizes a Western blot? A. Antibody/protein hybridization B. DNA/RNA combination C. RNA ...

4 concepts of Dalton's atomic theory and their correctness - 1. All matter is composed of indivisible particles (atoms) (can split atoms but this is generally correct) 2. atoms and indestructible and unchangeable (can change with extraneous outside methods, but still true) 3. all atoms of a given element are identical (false because of isotopes) 4. compounds are formed when atoms of different elements combine (true) absolute numbers - counts rather than measurements, conversion factors; i...

BIOL 1201: Exam 1 Questions With 100% Correct Answers A substance that cannot be broken down into other substances by ordinary chemical procedures is a(n) _____. - answerelement Organisms are largely composed of __ elements. - answer11 About 25 of the 92 natural elements are known to be essential to life. Which four of these 25 elements make up approximately 96% of living matter? - answercarbon, hydrogen, nitrogen, and oxygen What determines solubility? - answer"like dissolves like" A...

BIOL 1201: Exam 1 Questions With 100% Correct Answers A substance that cannot be broken down into other substances by ordinary chemical procedures is a(n) _____. - answerelement Organisms are largely composed of __ elements. - answer11 About 25 of the 92 natural elements are known to be essential to life. Which four of these 25 elements make up approximately 96% of living matter? - answercarbon, hydrogen, nitrogen, and oxygen What determines solubility? - answer"like dissolves like" A...

Lewis Structures - represents the transfer or the sharing of electrons in chemical bonds octet rule - EVERY ATOM WANTS 8 ELECTRONS IN THEIR OUTERSHELL ionic bonding - chemical bond formed through the transfer of one or more electrons from one atom or group of atoms to another group EX : NaBr metals - give nonmetals - take oxidation number - the superscript indicating the charge on an ion ion - atom with either positive or negative charge binary compound - compounds in which 2 elements a...