Chem BIG REVIEW - Jones-wiki
... bonded covalently in a continuous network. Examples include diamond, graphite, and quartz. COVALENT BONDING Covalent compounds occur between two nonmetals or a nonmetal and hydrogen. In a covalent bond, atoms share electrons and neither atom has an ionic charge. The electronegativity difference of t ...
... bonded covalently in a continuous network. Examples include diamond, graphite, and quartz. COVALENT BONDING Covalent compounds occur between two nonmetals or a nonmetal and hydrogen. In a covalent bond, atoms share electrons and neither atom has an ionic charge. The electronegativity difference of t ...
Shapes of the Charge Clouds
... •These areas are cloud-like with a fairly large space being filled by a few tiny electrons (e.g. fan blades) •Therefore, the electron cloud takes up most of the space of the atom, while the small, dense nucleus fills the center. ...
... •These areas are cloud-like with a fairly large space being filled by a few tiny electrons (e.g. fan blades) •Therefore, the electron cloud takes up most of the space of the atom, while the small, dense nucleus fills the center. ...
Chemical Reactions
... • Ionic compounds are formed by a metal and a nonmetal • Charge must be zero • Ex: magnesium (Mg) has two valence electrons, so has a change of +2; chlorine needs one val. el. to make a full set, so it’s charge is -1. Therefore you need 2 chlorine ions to equal zero: ...
... • Ionic compounds are formed by a metal and a nonmetal • Charge must be zero • Ex: magnesium (Mg) has two valence electrons, so has a change of +2; chlorine needs one val. el. to make a full set, so it’s charge is -1. Therefore you need 2 chlorine ions to equal zero: ...
Chemistry 1. The Periodic Table displays the
... 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 NaCl ...
... 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 NaCl ...
Chapter 2: Chemical Basis of Life
... Thibodeau: Anatomy and Physiology, 5/e Chapter 2: Chemical Basis of Life It would be difficult to appreciate fully the characteristics of living matter and its functions without looking at the basic principles of chemistry as they apply to life processes. In fact, it is almost impossible to speak of ...
... Thibodeau: Anatomy and Physiology, 5/e Chapter 2: Chemical Basis of Life It would be difficult to appreciate fully the characteristics of living matter and its functions without looking at the basic principles of chemistry as they apply to life processes. In fact, it is almost impossible to speak of ...
Chapters 9 and 10
... What is the geometric shape formed by the atoms in ICI4+? 23. 2006 B #7b Boron commonly forms molecules of the type BX3. These molecules have a trigonal planar structure. 24. 2007 #6 a -d a. Draw a complete Lewis electron-dot diagram for the IF3 molecule b. On the basis of the Lewis electron-dot dia ...
... What is the geometric shape formed by the atoms in ICI4+? 23. 2006 B #7b Boron commonly forms molecules of the type BX3. These molecules have a trigonal planar structure. 24. 2007 #6 a -d a. Draw a complete Lewis electron-dot diagram for the IF3 molecule b. On the basis of the Lewis electron-dot dia ...
Exam Review - hrsbstaff.ednet.ns.ca
... 25. Rutherford's observation that a gold fail scatters some alpha particle through angles greater than 90º enabled him to conclude that a) all atoms are electrically neutral. b) the nucleus of the atom contains the positive charge. c) an electron has a very small mass. d) electrons are a part of al ...
... 25. Rutherford's observation that a gold fail scatters some alpha particle through angles greater than 90º enabled him to conclude that a) all atoms are electrically neutral. b) the nucleus of the atom contains the positive charge. c) an electron has a very small mass. d) electrons are a part of al ...
Chemical reactions
... • Ionic - lacking discrete unit, or molecule • Composed of both metallic and nonmetallic elements • Electronegativity difference > 1.7 ...
... • Ionic - lacking discrete unit, or molecule • Composed of both metallic and nonmetallic elements • Electronegativity difference > 1.7 ...
Modern Model of the Atom
... Each energy sublevel corresponds to an ATOMIC ORBITAL (often referred to as a cloud) ...
... Each energy sublevel corresponds to an ATOMIC ORBITAL (often referred to as a cloud) ...
BIG IDEAS - BC Curriculum - Province of British Columbia
... • Demonstrate an awareness of assumptions, question information given, and identify bias in their own work and in primary and secondary sources • Consider the changes in knowledge over time as tools and technologies have developed • Connect scientific explorations to careers in science • Exercise a ...
... • Demonstrate an awareness of assumptions, question information given, and identify bias in their own work and in primary and secondary sources • Consider the changes in knowledge over time as tools and technologies have developed • Connect scientific explorations to careers in science • Exercise a ...
Chemistry Atomic structure Chapter 4, and Chapter 5, p. 146-148
... Electromagnetic Spectrum- Includes all forms of electromagnetic radiation Atomic Emission Spectrum- A set of frequencies of electromagnetic waves given off by atoms of an element, consists of a series of fine lines of individual colors. ...
... Electromagnetic Spectrum- Includes all forms of electromagnetic radiation Atomic Emission Spectrum- A set of frequencies of electromagnetic waves given off by atoms of an element, consists of a series of fine lines of individual colors. ...
Final Exam Study Guide Page 1 Quiz
... a. The number of atoms in a mole of an element b. The number of molecules in a mole of a compound c. A and B d. None of the above Use the following equation to answer numbers 9, 10, and 11: Fe + 2H2SO4 → Fe(SO4)2 +2 H2 9. If 2.31g iron reacted with 8.83g sulfuric acid, what is the limiting reactant? ...
... a. The number of atoms in a mole of an element b. The number of molecules in a mole of a compound c. A and B d. None of the above Use the following equation to answer numbers 9, 10, and 11: Fe + 2H2SO4 → Fe(SO4)2 +2 H2 9. If 2.31g iron reacted with 8.83g sulfuric acid, what is the limiting reactant? ...
Matter: a Material World
... Energy Levels in Atoms Electrons in atoms do NOT “orbit” around the nucleus like little planets - their position better described by probability waves However, they do move in different “energy states” – some electrons in a given atom have more energy than others These energy states are “quantized” ...
... Energy Levels in Atoms Electrons in atoms do NOT “orbit” around the nucleus like little planets - their position better described by probability waves However, they do move in different “energy states” – some electrons in a given atom have more energy than others These energy states are “quantized” ...
Page | 1 MATS1101 Chemistry notes semester 2 2012 TOPIC 1
... neutrons) that is surrounded at some considerable distance by the electrons. Isoelectronic species have the same number and arrangement of electrons the Atomic Number of an element is equal to the number of protons in the nucleus of the atom The Mass Number is an integral number used to indicate the ...
... neutrons) that is surrounded at some considerable distance by the electrons. Isoelectronic species have the same number and arrangement of electrons the Atomic Number of an element is equal to the number of protons in the nucleus of the atom The Mass Number is an integral number used to indicate the ...
sample paper chemistry clas xi set 3
... whereas in Mg atom, due to small size, large amount ofenergy is required ...
... whereas in Mg atom, due to small size, large amount ofenergy is required ...
Matter - Moodle
... • Helium is light and non-flammable so it is good for _____________________ element A substance that cannot be separated or broken down into simpler substances by __________________ means More than _______elements occur naturally on Earth ...
... • Helium is light and non-flammable so it is good for _____________________ element A substance that cannot be separated or broken down into simpler substances by __________________ means More than _______elements occur naturally on Earth ...
The Atom
... Atoms of one element can combine with those of other elements to form compounds, and a given compound always has the same relative numbers (ratios) of types of atoms. • ie, H2O is a 2:1 ratio by mass and that ratio will not change ...
... Atoms of one element can combine with those of other elements to form compounds, and a given compound always has the same relative numbers (ratios) of types of atoms. • ie, H2O is a 2:1 ratio by mass and that ratio will not change ...
chemistry 101 spring 2002 part 1
... Directions: (1) Put your name, S.I.D. number and signature on the free response part of the exam where indicated. (2) Each multiple choice question is actually 2 questions on your scanning sheet. If you are sure of an answer, put the same answer down for both questions for 5 pts. If you cannot decid ...
... Directions: (1) Put your name, S.I.D. number and signature on the free response part of the exam where indicated. (2) Each multiple choice question is actually 2 questions on your scanning sheet. If you are sure of an answer, put the same answer down for both questions for 5 pts. If you cannot decid ...
Chapter 12: Intermolecular Attractions and the Properties of Liquids
... 7-Hydrogen bonding Very strong dipole-dipole attraction that occur when H is covalently bonded to to a small, highly electronegative atom (usually F, O, or N) – Typically about 10 times stronger than other dipole-dipole attractions . – Are responsible for making water a liquid , for high boiling po ...
... 7-Hydrogen bonding Very strong dipole-dipole attraction that occur when H is covalently bonded to to a small, highly electronegative atom (usually F, O, or N) – Typically about 10 times stronger than other dipole-dipole attractions . – Are responsible for making water a liquid , for high boiling po ...
1. Larger a
... But what about all of those protons and neutrons in the nucleus? The nucleus and its constituents are several orders of magnitude smaller than the atom. Protons and neutrons have sizes that are typically of order 10-15 m. Hence, even if you pack a few hundred of them into a small ball so that they t ...
... But what about all of those protons and neutrons in the nucleus? The nucleus and its constituents are several orders of magnitude smaller than the atom. Protons and neutrons have sizes that are typically of order 10-15 m. Hence, even if you pack a few hundred of them into a small ball so that they t ...
02 Atomic Structure
... (a) The radius of an electron can be calculated by using this model (b) In an undisturbed atom, the electron will be at their equilibrium position, where the attraction between the cloud of positive charge and the electrons balances their mutual repulsion (c) It can explain the existance of protons ...
... (a) The radius of an electron can be calculated by using this model (b) In an undisturbed atom, the electron will be at their equilibrium position, where the attraction between the cloud of positive charge and the electrons balances their mutual repulsion (c) It can explain the existance of protons ...
Ch 2.1 and 2.2 Review
... What is the difference between cohesion and adhesion? Cohesion – Water is attracted to itself. Surface tension is an example, the water molecules attached to each other make a layer on the surface. Adhesion – Water molecules are attracted to other types of molecules ex) water and glass ...
... What is the difference between cohesion and adhesion? Cohesion – Water is attracted to itself. Surface tension is an example, the water molecules attached to each other make a layer on the surface. Adhesion – Water molecules are attracted to other types of molecules ex) water and glass ...
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.