File - Get Involved!
... Bonding (Intramolecular Forces) • Ionic Bond – Transfer of electrons – Often metals (cations) and nonmetals (anions) – The potential energy or lattice energy of the system is lowered (exothermic) when ion complexes form • Covalent Bond – Sharing of electrons – Shift of electron density – Between tw ...
... Bonding (Intramolecular Forces) • Ionic Bond – Transfer of electrons – Often metals (cations) and nonmetals (anions) – The potential energy or lattice energy of the system is lowered (exothermic) when ion complexes form • Covalent Bond – Sharing of electrons – Shift of electron density – Between tw ...
Chemistry 2011-2012
... SC1a. Relate the role of nuclear fusion in producing essentially all elements heavier than helium. SC1b. Identify substances based on chemical and physical properties. SC2 Students will relate how the Law of Conservation of Matter is used to determine chemical composition in compounds and chemical r ...
... SC1a. Relate the role of nuclear fusion in producing essentially all elements heavier than helium. SC1b. Identify substances based on chemical and physical properties. SC2 Students will relate how the Law of Conservation of Matter is used to determine chemical composition in compounds and chemical r ...
Topic 2 IB Chemistry Assessment Statements 2009 Revised File
... and recognize that the lines in a line spectrum are directly related to these differences. An understanding of convergence is expected. Series should be considered in the ultraviolet, visible and infrared regions of the spectrum. Calculations, knowledge of quantum numbers and historical references w ...
... and recognize that the lines in a line spectrum are directly related to these differences. An understanding of convergence is expected. Series should be considered in the ultraviolet, visible and infrared regions of the spectrum. Calculations, knowledge of quantum numbers and historical references w ...
GC-Final-Review-2014
... _____3. polar covalent _____4. nonpolar covalent _____5. sigma bond _____6. pi bond _____7. resonance structures _____8. multiple covalent bonds _____9. octet rule Chapter 9 Stoichiometry _____ 1. Reaction Stoich _____ 2. Theoretical Yield _____ 3. Actual Yield _____ 4. Limiting reagent _____ 5. Exc ...
... _____3. polar covalent _____4. nonpolar covalent _____5. sigma bond _____6. pi bond _____7. resonance structures _____8. multiple covalent bonds _____9. octet rule Chapter 9 Stoichiometry _____ 1. Reaction Stoich _____ 2. Theoretical Yield _____ 3. Actual Yield _____ 4. Limiting reagent _____ 5. Exc ...
Study Guide for Composition of Matter Test - seys
... - all of the atoms of a particular atom are identical but are different from atoms of all other elements - one of the several people who changed the model of the atom - electrons in the electron cloud - move about the nucleus very quickly - not possible to determine their exact position exactly - th ...
... - all of the atoms of a particular atom are identical but are different from atoms of all other elements - one of the several people who changed the model of the atom - electrons in the electron cloud - move about the nucleus very quickly - not possible to determine their exact position exactly - th ...
C1403_Final Exam p. 1 Friday, January 23, 2004 Printed Last Name
... UNDER NO CIRCUMSTANCES are you to make marks on the bubble sheet except in the appropriate bubbles for marking an answer you believe to be correct. You may write on the exam sheets themselves for the purpose of doing calculations. A PERIODIC TABLE OF THE ELEMENTS can be found at the end of this exam ...
... UNDER NO CIRCUMSTANCES are you to make marks on the bubble sheet except in the appropriate bubbles for marking an answer you believe to be correct. You may write on the exam sheets themselves for the purpose of doing calculations. A PERIODIC TABLE OF THE ELEMENTS can be found at the end of this exam ...
Key Words Electronic Homework Problems Questions and Problems
... 10.72 Although both carbon and silicon are in Group 4A, very few SiPSi bonds are known. Account for the instability of silicon-to-silicon double bonds in general. (Hint: Compare the atomic radii of C and Si in Figure 8.5. What effect would the larger size have on pi bond formation?) 10.73 Predict th ...
... 10.72 Although both carbon and silicon are in Group 4A, very few SiPSi bonds are known. Account for the instability of silicon-to-silicon double bonds in general. (Hint: Compare the atomic radii of C and Si in Figure 8.5. What effect would the larger size have on pi bond formation?) 10.73 Predict th ...
Chemistry Final - Practice Test I
... An atom of one or more substances are rearranged to form different substances b. Law of Definite Proportions (not Law of Conservation of Matter) A compound contains the same elements in exactly the same proportions by mass regardless of the size of the sample or source of the compound. ...
... An atom of one or more substances are rearranged to form different substances b. Law of Definite Proportions (not Law of Conservation of Matter) A compound contains the same elements in exactly the same proportions by mass regardless of the size of the sample or source of the compound. ...
Balancing Chemical Equations
... skeleton equation = formulas of the reactants & products only, no balancing of # of atoms due to the Law of Conservation of Mass, mass of reactants = mass of products o we cannot change the formulas therefore we must change the number of molecules o we do this by adding coefficients in front of th ...
... skeleton equation = formulas of the reactants & products only, no balancing of # of atoms due to the Law of Conservation of Mass, mass of reactants = mass of products o we cannot change the formulas therefore we must change the number of molecules o we do this by adding coefficients in front of th ...
Grades 9-12 Chemistry California Content Standards
... a. atoms combine to form molecules by sharing electrons to form covalent or metallic bonds, or by exchanging electrons to form ionic bonds. b. chemical bonds between atoms in molecules such as H2, CH4, NH3, H2CCH2, N2, Cl2, and many large biological molecules are covalent. c. salt crystals such as N ...
... a. atoms combine to form molecules by sharing electrons to form covalent or metallic bonds, or by exchanging electrons to form ionic bonds. b. chemical bonds between atoms in molecules such as H2, CH4, NH3, H2CCH2, N2, Cl2, and many large biological molecules are covalent. c. salt crystals such as N ...
Chemistry - Gorman Learning Center
... a. atoms combine to form molecules by sharing electrons to form covalent or metallic bonds, or by exchanging electrons to form ionic bonds. b. chemical bonds between atoms in molecules such as H2, CH4, NH3, H2CCH2, N2, Cl2, and many large biological molecules are covalent. c. salt crystals such as N ...
... a. atoms combine to form molecules by sharing electrons to form covalent or metallic bonds, or by exchanging electrons to form ionic bonds. b. chemical bonds between atoms in molecules such as H2, CH4, NH3, H2CCH2, N2, Cl2, and many large biological molecules are covalent. c. salt crystals such as N ...
MYP 10 PeriodicityWS
... 5(a) Draw a diagram to show the structure of sodium chloride. Explain, in terms of bonding, why sodium chloride has a high melting point. (b) Lithium reacts with water. Write an equation for the reaction and state two observations that could be made during the reaction. [SL paper 2, Nov 05] 6 (a) Fo ...
... 5(a) Draw a diagram to show the structure of sodium chloride. Explain, in terms of bonding, why sodium chloride has a high melting point. (b) Lithium reacts with water. Write an equation for the reaction and state two observations that could be made during the reaction. [SL paper 2, Nov 05] 6 (a) Fo ...
File
... Metals are elements that have luster, conduct heat and electricity, usually bend without breaking (malleable) and are ductile. Most have extremely high melting points. Reactivity increases as you go down within a group for metals. With metals the greater the tendency to lose electrons, the more reac ...
... Metals are elements that have luster, conduct heat and electricity, usually bend without breaking (malleable) and are ductile. Most have extremely high melting points. Reactivity increases as you go down within a group for metals. With metals the greater the tendency to lose electrons, the more reac ...
complete outlines
... Ionic – metal with nonmetal or involving polyatomic ions (electrons are transferred) forms crystalline solids Covalent – non-metal with non-metal (electrons are shared) forms molecular compounds and network covalent solids Metallic – metal with metal ...
... Ionic – metal with nonmetal or involving polyatomic ions (electrons are transferred) forms crystalline solids Covalent – non-metal with non-metal (electrons are shared) forms molecular compounds and network covalent solids Metallic – metal with metal ...
Unit 2 Lecture Outline
... Molecular geometry describes the three-dimensional arrangement of atoms in a molecule. Molecular geometry is an important factor in determining physical and chemical properties of molecules as well as reactions molecules will or will not undergo. For simple molecules molecular geometry can be predic ...
... Molecular geometry describes the three-dimensional arrangement of atoms in a molecule. Molecular geometry is an important factor in determining physical and chemical properties of molecules as well as reactions molecules will or will not undergo. For simple molecules molecular geometry can be predic ...
Average Atomic Mass
... Convert the following numbers from scientific notation to ordinary notation. 9. 3.02 x 10-3 g A/F. .302 x 10-3 g B/G. 3.02 g C/H. 0.00302 g D/J. 3020 g ...
... Convert the following numbers from scientific notation to ordinary notation. 9. 3.02 x 10-3 g A/F. .302 x 10-3 g B/G. 3.02 g C/H. 0.00302 g D/J. 3020 g ...
BS5-Ch 2.
... Your Turn There are 2 isotopes of element Z. The first is 56.5% in abundance and has a mass of 152.3 u. If the atomic mass is 155.5 u, what is the mass of the other isotope? A. 156 u B. 44.5 u C. 157. u D. not enough information given E. none of these 153.7 u 2.2 Atoms are composed of subatomic par ...
... Your Turn There are 2 isotopes of element Z. The first is 56.5% in abundance and has a mass of 152.3 u. If the atomic mass is 155.5 u, what is the mass of the other isotope? A. 156 u B. 44.5 u C. 157. u D. not enough information given E. none of these 153.7 u 2.2 Atoms are composed of subatomic par ...
Chapter 4 The structure of diatomic molecules
... of our own imagination.” --C.A. Coulson (1910-1974) ...
... of our own imagination.” --C.A. Coulson (1910-1974) ...
Chemical bond
A chemical bond is an attraction between atoms that allows the formation of chemical substances that contain two or more atoms. The bond is caused by the electrostatic force of attraction between opposite charges, either between electrons and nuclei, or as the result of a dipole attraction. The strength of chemical bonds varies considerably; there are ""strong bonds"" such as covalent or ionic bonds and ""weak bonds"" such as Dipole-dipole interaction, the London dispersion force and hydrogen bonding.Since opposite charges attract via a simple electromagnetic force, the negatively charged electrons that are orbiting the nucleus and the positively charged protons in the nucleus attract each other. An electron positioned between two nuclei will be attracted to both of them, and the nuclei will be attracted toward electrons in this position. This attraction constitutes the chemical bond. Due to the matter wave nature of electrons and their smaller mass, they must occupy a much larger amount of volume compared with the nuclei, and this volume occupied by the electrons keeps the atomic nuclei relatively far apart, as compared with the size of the nuclei themselves. This phenomenon limits the distance between nuclei and atoms in a bond.In general, strong chemical bonding is associated with the sharing or transfer of electrons between the participating atoms. The atoms in molecules, crystals, metals and diatomic gases—indeed most of the physical environment around us—are held together by chemical bonds, which dictate the structure and the bulk properties of matter.All bonds can be explained by quantum theory, but, in practice, simplification rules allow chemists to predict the strength, directionality, and polarity of bonds. The octet rule and VSEPR theory are two examples. More sophisticated theories are valence bond theory which includes orbital hybridization and resonance, and the linear combination of atomic orbitals molecular orbital method which includes ligand field theory. Electrostatics are used to describe bond polarities and the effects they have on chemical substances.