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chp 2 notes
chp 2 notes

... -H and H form H2 molecule Compounds: two or more different atoms combine -C and H form CH4 Methane -Compounds have different properties than the elements that make them CHEMICAL BONDS AND CHEMICAL REACTIONS Chemical Reactions: occur when atoms combine with or dissociate from other Atoms Bond Formati ...
Chapter 2
Chapter 2

... stable When valence shell is not full, atoms tend to lose, gain, or share electrons ...
The Periodic Table
The Periodic Table

... Rule 1. In order to understand bonding, remember hydrogen wants a total of 2 electrons in the electron hotel and most of the remaining elements of interest to us want a total of eight. See if you can draw structures for each of the following compounds that satisfy this rule. ...
Recitation Activity 8
Recitation Activity 8

... For each compound below draw the Lewis Structure and fill in the blanks #Bonded Pairs #Lone Pairs H2S ...
Honors Unit 5 Practice Test
Honors Unit 5 Practice Test

... a. ionic radius. c. cation. b. valence electron. d. anion. In a row in the periodic table, as the atomic number increases, the atomic radius generally a. decreases. c. increases. b. remains constant. d. becomes immeasurable. In the alkaline-earth group, atoms with the smallest radii a. are the most ...
Chemical Bonding and Molecular Structure
Chemical Bonding and Molecular Structure

... bottom of the structure on both trigonal bipyramidal and octahedral. Equitorial – the locations around the middle of the molecule. Recalling that electron pairs are “space hogs”… Which of these arrangements do you predict to be the most stable? In an octahedral all bond angles are equal, so first pa ...
Chemistry Study Guide
Chemistry Study Guide

... 6. What kind of bond is NaCl? Ionic CO2 Covalent N2 Covalent 7. Which group forms acids with H+ ion? Halogens (Group 17) 8. How many valence electrons are in a Group 1 element? 1 Group 13? 3 9. How do positive and negative ions form? Positive ions form when an atom loses an electron, negative ions f ...
Lecture 24 (Slides) October 18
Lecture 24 (Slides) October 18

... • When Main Group elements react, electrons can be transferred (usually from a metal to a nonmetal) to form ionic bonds. In other cases, pairs of electrons can be shared (usually between nonmetal atoms) to form covalent bonds. In both cases valence electrons are somehow “rearranged” when new chemica ...
Document
Document

... charged and will not allow the flow of electrons through the solution to complete the circuit so the light will not come on. ...
Intermolecular Forces
Intermolecular Forces

... between some atoms and hydrogen is so strong that it creates a very strong dipole ...
Notes#5 Bill nye atoms
Notes#5 Bill nye atoms

... 2. What are atoms? ____________________________________________________________________ ________________________________________________________________________________________ 3. The word “Atom” comes from a Greek word that means _________________. 4. The heavy particles of an atom are in the _____ ...
The Chemical Context of Life
The Chemical Context of Life

... Energy is the capacity to cause change  Potential energy is the energy that matter has because of its location or structure  The electrons of an atom differ in their amounts of potential energy  An electron’s state of potential energy is called its energy level, or electron shell  Only the elect ...
1.2 Basic Atomic Theory Electrical structure of matter
1.2 Basic Atomic Theory Electrical structure of matter

... the ozone layer with our air conditioners and underarm deodorants and cause everybody to get cancer? Obviously we’re not … and we can’t … and it’s a hoax. Evidence is mounting all the time that ozone depletion is, if occurring at all, is not doing so at an alarming ...
4. - period2chem
4. - period2chem

... point to identify the areas on which you need to spend more study time. For those areas, go back to homework assignments, quizzes, and reviews to practice more problems. I would also recommend going through all of your tests since these questions are only samples and do not include specific examples ...
Chapter 2 - Faculty Web Pages
Chapter 2 - Faculty Web Pages

... Atoms of the same element are identical, and atoms of different elements are different. Atoms combine to form compounds in fixed integer ratios. In chemical reactions, the atoms do not change. ...
Lecture Summary July 1st
Lecture Summary July 1st

... more electronegative atom. Remember: B-H, C-H and P-H bonds are assumed nonpolar. All other covalent bonds between two different nonmetals are assumed polar, i.e. have a bond dipole. 3. Sum all the individual bond dipoles together. If all the individual bond dipoles cancel, then the molecule is nonp ...
10.5-10.7 Molecular Shape, Polarity and Valence Bond Theory
10.5-10.7 Molecular Shape, Polarity and Valence Bond Theory

... correspond more closely to the actual distribution of electrons in chemically bonded atoms. (These orbitals have different shapes and energies). • Molecules with 4 electron pairs (remember this means shared or unshared electrons) around the central atom are said to be sp3 hybridized and have bond an ...
Chemistry of Life
Chemistry of Life

... One atom of oxygen binds to two atoms of hydrogen to form H20. Like all molecules a water molecule (H20) is neutral. Water molecules are held together by a hydrogen bond. Hydrogen Bonds are not as strong as covalent or ionic bonds. The hydrogen atoms are attached to one side of the oxygen atom, resu ...
Lecture 3 Chemistry
Lecture 3 Chemistry

... Number of electrons in outer shell determines bonding properties chemical behavior ...
Chapter 2 BIO 100 Chemistry
Chapter 2 BIO 100 Chemistry

... • Covalent bond between two atoms of the same element is always nonpolar. •A covalent bond between atoms that have similar electronegativities is also nonpolar. •Because carbon and hydrogen do not differ greatly in electronegativities, the bonds of CH4 ...
Chapter 2 Notes: The Chemistry of Life
Chapter 2 Notes: The Chemistry of Life

... B. 7 is neutral; between 0-7 is acidic; between 7-14 is basic C. acid – a compound that forms H+ in solution D. base – a compound that forms OH- in water E. buffer – weak acids or bases that help keep the pH in living things near the neutral range ...
Key Concepts PowerPoint
Key Concepts PowerPoint

... Three of the following molecular models have a tetrahedral central atom, and one does not. Which is the odd one? (There may be a “hidden” atom in some cases.) ...
Geometric Figures - U of L Class Index
Geometric Figures - U of L Class Index

... The bond between the small blue atom and the large gray atom is in the same line as the bond between the two large gray atoms. The angle between these two bonds is 180°. If you had to describe the orientation of the blue atom to the two gray atoms, you would say that they are all on the same line or ...
Bill Nye: Atoms - nowyoudothemath
Bill Nye: Atoms - nowyoudothemath

ATOMS
ATOMS

... symbol that tells how many atoms of an element there are in the compound. It means “written below”. • For example: H20 (2 is the subscript) There are 2 atoms of hydrogen (H) and 1 atom of oxygen (O). This makes up 1 molecule of water. ...
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Hypervalent molecule

A hypervalent molecule (the phenomenon is sometimes colloquially known as expanded octet) is a molecule that contains one or more main group elements formally bearing more than eight electrons in their valence shells. Phosphorus pentachloride (PCl5), sulfur hexafluoride (SF6), chlorine trifluoride (ClF3), and the triiodide (I3−) ion are examples of hypervalent molecules.
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