Chemical Nomenclature (ionic compounds)
... f) Brackets are sometimes used to contain groups of atoms (called polyatomic ions). If a number appears to the right and below (subscript) the bracket, the subscript is ONLY multiplied by the atoms appearing inside the brackets. i.e. Al(NO3)3 This compound contains the following atoms: 1 x Al = 1 a ...
... f) Brackets are sometimes used to contain groups of atoms (called polyatomic ions). If a number appears to the right and below (subscript) the bracket, the subscript is ONLY multiplied by the atoms appearing inside the brackets. i.e. Al(NO3)3 This compound contains the following atoms: 1 x Al = 1 a ...
Balancing Equations Notes
... element to count the atoms. Then list the number of atoms of each element on each side. 4. It is often easiest to start balancing with an element that appears only once on each side of the arrow. These elements must have the same coefficient. Next balance elements that appear only once on each side ...
... element to count the atoms. Then list the number of atoms of each element on each side. 4. It is often easiest to start balancing with an element that appears only once on each side of the arrow. These elements must have the same coefficient. Next balance elements that appear only once on each side ...
Chemistry Test Review - Greenslime Home Page
... a. Change in temperature, bubbles produced, gas released, change in state of matter, color change, etc. 6. How many protons are in one molecule of NH4? Two molecules? a. 11 protons in one molecule b. 22 protons in 2 molecules 7. Describe the chemical formula: 4NaHCO3 a. 4 molecules of a compound con ...
... a. Change in temperature, bubbles produced, gas released, change in state of matter, color change, etc. 6. How many protons are in one molecule of NH4? Two molecules? a. 11 protons in one molecule b. 22 protons in 2 molecules 7. Describe the chemical formula: 4NaHCO3 a. 4 molecules of a compound con ...
Louie de Broglie
... However, the equation does not define the exact path the electron takes around the nucleus. It only estimates the probability of finding an electron in a certain position, unlike Bohr’s circular orbits. ...
... However, the equation does not define the exact path the electron takes around the nucleus. It only estimates the probability of finding an electron in a certain position, unlike Bohr’s circular orbits. ...
HL Chemistry: Notes Atomic Theory
... Energy occurs in discrete amounts (bundles) called quanta. 4. wave and particle behavior Energy can be thought of as waves or particles - photons represent the dual nature of light. All matter can be discussed this way, but since large pieces of matter have such short wavelengths and since very smal ...
... Energy occurs in discrete amounts (bundles) called quanta. 4. wave and particle behavior Energy can be thought of as waves or particles - photons represent the dual nature of light. All matter can be discussed this way, but since large pieces of matter have such short wavelengths and since very smal ...
Final Exam A - Answers - San Diego Chemistry Tutor
... 27. Water boils more easily (at lower temperatures) at higher altitudes than it does at sea level. Which factor below best explains why this happens? a) This is a colligative property of water. b) Temperatures cannot be properly measured at higher altitudes. c) The vapor pressure of water increases ...
... 27. Water boils more easily (at lower temperatures) at higher altitudes than it does at sea level. Which factor below best explains why this happens? a) This is a colligative property of water. b) Temperatures cannot be properly measured at higher altitudes. c) The vapor pressure of water increases ...
Matter Key
... substance which can be separated physically or chemically. (sand, salt, iron) Know how to calculate density and determine which objects float or sink Object is .89 grams and 2.3 mL What is density? Will it float in water? Why? 0.89g/2.3 mL = 0.39 g/mL 1.0g/mL ...
... substance which can be separated physically or chemically. (sand, salt, iron) Know how to calculate density and determine which objects float or sink Object is .89 grams and 2.3 mL What is density? Will it float in water? Why? 0.89g/2.3 mL = 0.39 g/mL 1.0g/mL ...
Ionic Bonding
... compounds formed by each of the following pairs of elements: (a) strontium and oxygen (b) sodium and sulfur (c) silver and iodine (d) barium and fluorine (e) calcium and bromine (f) lithium and chlorine 10. Write the chemical formulas for the following ionic compounds: (a) mercury(II) sulfide, cinna ...
... compounds formed by each of the following pairs of elements: (a) strontium and oxygen (b) sodium and sulfur (c) silver and iodine (d) barium and fluorine (e) calcium and bromine (f) lithium and chlorine 10. Write the chemical formulas for the following ionic compounds: (a) mercury(II) sulfide, cinna ...
Exam 3 Answer Key
... for solid magnesium. For full credit, either provide a Born-Haber Cycle diagram or a complete set of chemical equations to explain the process of forming the ionic Mg-F bond. Hdissociation F2(g) ...
... for solid magnesium. For full credit, either provide a Born-Haber Cycle diagram or a complete set of chemical equations to explain the process of forming the ionic Mg-F bond. Hdissociation F2(g) ...
Unit 9 – Behavior of Gases
... metals, Halogens, Noble Gases, transition metals, metalloids? 8. Do the short-hand electron configuration for: Arsenic b. Barium 9. Determine the # of valence electrons for the following elements. Then, tell what the charge on their ion would be when they form an ionic compound. a. oxygen b. neon c. ...
... metals, Halogens, Noble Gases, transition metals, metalloids? 8. Do the short-hand electron configuration for: Arsenic b. Barium 9. Determine the # of valence electrons for the following elements. Then, tell what the charge on their ion would be when they form an ionic compound. a. oxygen b. neon c. ...
1 Chemistry 400: General Chemistry Name: Miller Fall 2015 Final
... 4. There is a relationship between intermolecular forces, temperature, and the temperatures at which the solid, liquid, and gas phases exist. Each blank will be filled in with one of the words in bold. You may use each word more than once. (1 point per blank) A. ______________________ is proportion ...
... 4. There is a relationship between intermolecular forces, temperature, and the temperatures at which the solid, liquid, and gas phases exist. Each blank will be filled in with one of the words in bold. You may use each word more than once. (1 point per blank) A. ______________________ is proportion ...
BEC 2 - JILA
... Temperatures down to 10-100 nanoK Each atom behaves as a bar magnet This process is similar to what happens with your cup of coffee. The hottest molecules escape from the cup as vapor In a magnetic field atoms can be trapped: ...
... Temperatures down to 10-100 nanoK Each atom behaves as a bar magnet This process is similar to what happens with your cup of coffee. The hottest molecules escape from the cup as vapor In a magnetic field atoms can be trapped: ...
Name: Chapter 3 Reading Guide: Molecules, Compounds, and
... When hydrogen and oxygen combine to form the compound water, a dramatically _____________________ substance results. When two or more elements combine to form a ______________________, an entirely ______________ substance results. In a compound, elements combine in ________________, ________________ ...
... When hydrogen and oxygen combine to form the compound water, a dramatically _____________________ substance results. When two or more elements combine to form a ______________________, an entirely ______________ substance results. In a compound, elements combine in ________________, ________________ ...
The world of Atoms - University of California, Irvine
... “I cannot but confess that I attach only a transitory importance to this interpretation. I still believe in the possibility of a model of reality - that is to say, of a theory which represents things themselves and not merely the probability of their occurrence. On the other hand, it seems to me cer ...
... “I cannot but confess that I attach only a transitory importance to this interpretation. I still believe in the possibility of a model of reality - that is to say, of a theory which represents things themselves and not merely the probability of their occurrence. On the other hand, it seems to me cer ...
3.091 – Introduction to Solid State Chemistry Lecture Notes No
... by electronic rearrangements must be in a lower energy state than the atoms were prior to interaction, prior to bond formation. Since atoms of each of the elements have different electronic structures, the variety of possible chemical bonds (differing from each other in at least some small way) is c ...
... by electronic rearrangements must be in a lower energy state than the atoms were prior to interaction, prior to bond formation. Since atoms of each of the elements have different electronic structures, the variety of possible chemical bonds (differing from each other in at least some small way) is c ...
Atoms, Ions and Molecules
... the oxygen ion has 8 protons and 10 electrons so the overall charge is 8 – 1 0 = –2. Remember that neutrons have no electric charge so the number of neutrons (usually 8 for oxygen) does ...
... the oxygen ion has 8 protons and 10 electrons so the overall charge is 8 – 1 0 = –2. Remember that neutrons have no electric charge so the number of neutrons (usually 8 for oxygen) does ...
Chemistry--Chapter 5: Atomic Structure and the Periodic Table
... a. late 1700’s conducted research and experiments b. result was Dalton’s atomic theory: 1) All elements are composed of tiny indivisible particles called atoms (we know now atoms are divisible!). 2) Atoms of the same element are identical. The atoms of any one element are different from those of any ...
... a. late 1700’s conducted research and experiments b. result was Dalton’s atomic theory: 1) All elements are composed of tiny indivisible particles called atoms (we know now atoms are divisible!). 2) Atoms of the same element are identical. The atoms of any one element are different from those of any ...
Atomic number
... Which of these describes a pollution-producing process that involves only a physical change? a) Coal with a high sulfur content is burned, producing gases that cause acid rain. b) Chlorofluorocarbons are released, changing ozone in the upper atmosphere into oxygen. c) Hot wastewater is discharged i ...
... Which of these describes a pollution-producing process that involves only a physical change? a) Coal with a high sulfur content is burned, producing gases that cause acid rain. b) Chlorofluorocarbons are released, changing ozone in the upper atmosphere into oxygen. c) Hot wastewater is discharged i ...
Final Exam Review
... 50. How are a Na atom and a Na+1 ion different? 51. What is the difference between a pure substance and a mixture? 52. What is the chemical formula of water? 53. How many orbitals are in each energy level? 54. Convert mL to cm3. 55. When does an electron emit light? Chapter 6 ...
... 50. How are a Na atom and a Na+1 ion different? 51. What is the difference between a pure substance and a mixture? 52. What is the chemical formula of water? 53. How many orbitals are in each energy level? 54. Convert mL to cm3. 55. When does an electron emit light? Chapter 6 ...
Quantum Numbers and Atomic Orbitals
... The position and energies of electrons in atoms can be described by atomic orbitals ...
... The position and energies of electrons in atoms can be described by atomic orbitals ...
Chemistry 215 Quiz 1 (20 points)
... Section 1 - Multiple Choice (mark correct answer on Scantron- 2.5 points each) ...
... Section 1 - Multiple Choice (mark correct answer on Scantron- 2.5 points each) ...
Honors Chemistry
... 39. The Lewis structures for the following molecules have all been drawn in previous questions. For each of these molecules, draw the structural formula to the proper shape and indicate if it is polar or nonpolar. If polar, draw the arrow indicating the direction of the dipole. ...
... 39. The Lewis structures for the following molecules have all been drawn in previous questions. For each of these molecules, draw the structural formula to the proper shape and indicate if it is polar or nonpolar. If polar, draw the arrow indicating the direction of the dipole. ...
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.