Representative Elements I. Elements A. Representative Elements: Groups 1A through 8A ← Filling s and p orbitals ← First member of a group forms the strongest ( bonds; results in diatomic molecules B. Transition Elements: center of the table ← Filling d orbitals C. Lanthanides & Actinides: listed separately‚ on the bottom on the table ← Filling 4f and 5f orbitals II. Metals/Nonmetals/Metalloids A. Metals: ← Lose valence electrons to form cations
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Oakland Schools Chemistry Resource Unit Intermolecular Forces Brook R. Kirouac David A. Consiglio‚ Jr. Southfield‐Lathrup High School Southfield Public Schools Bonding: Intermolecular Forces Content Statements: C2.2: Chemical Potential Energy Potential energy is stored whenever work must be done to change the distance between two objects. The attraction between the two objects may be gravitational‚ electrostatic‚ magnetic‚ or strong force. Chemical potential energy is the result
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balance scale to determine Acid‚ Base‚ and Neutral. On this lab we used 7 different solutions to determine if it’s either base‚ acid‚ and neutral. These are ammonia‚ vinegar; drain cleaner‚ soft drink‚ baking soda‚ detergent‚ and lemon juice are the solutions that are going to be tested in this lab. My hypothesis for these solutions is ammonia is acid‚ vinegar is neutral‚ drain cleaner is base‚ soft drink is base‚ baking soda is base‚ detergent is base‚ and lemon juice is an acid. For the red cabbage
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Methane From Wikipedia‚ the free encyclopedia Methane IUPAC name[hide] Methane[1] (substitutive) Tetrahydridocarbon[1] (additive) Identifiers CAS number 74-82-8 PubChem 297 ChemSpider 291 EC number 200-812-7 UN number 1971 KEGG C01438 MeSH Methane ChEBI CHEBI:16183 ChEMBL CHEMBL17564 RTECS number PA1490000 Beilstein Reference 1718732 Gmelin Reference 59 3DMet B01450 Jmol-3D images Image 1 SMILES [show] InChI [show] Properties Molecular formula CH4 Molar mass 16
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frequency 18. Calculations with energy‚ wavelength‚ and frequency 19. Dual nature of light and photoelectric effect 20. Electron’s energy is quantized‚ meaning that electrons jump by steps of QUANTA 21. Electron’s configuration a. electrons are in orbitals – place of higher probability of finding the electrons in an atom b. the four quantum numbers: n‚ l‚ m‚ s c. main energy level of an electron is
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two forms of the same element have the same number of protons but differ in the number of neutrons. 4-Be able to draw the electron shell diagram of an atom based on the atomic number and to predict the number of covalent and or ionic bonds that the atom will form based on the atomic number. -electron shells-3 shells (2-8-18) -Electron Orbital-2 electrons can fit into an orbital 5- Be able to distinguish covalent‚ ionic‚ hydrogen and hydrophobic bonds on the basis of structure and strength
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Critical temperature of ammonia and carbon dioxide are 405.5 K and 304.10 K respectively. Which these gases will liquefy first when you start cooling from 500K to their critical temperature 7. An element ‘A’ belongs to group 2 of the periodic table. It shows anomalous behavior from the rest of the elements of its group. It shows a diagonal relationship with another element ‘B’. Chlorides of both ‘A’ and ‘B’ have bridged structure in vapour phase. Identify A and B and draw the structures of their
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Topic: Atomic Orbitals 1. A) B) C) D) E) In quantum mechanics a node (nodal surface or plane) is: a place where Ψ is negative. a place where Ψ is positive. a place where Ψ = 0. a place where Ψ2 is large. a place where Ψ2 is negative. Ans: C Topic: Atomic Orbitals‚ Molecular Orbitals 2. When the 1s orbitals of two hydrogen atoms combine to form a hydrogen molecule‚ how many molecular orbitals are formed? A) 1 B) 2 C) 3 D) 4 E) 5 Ans: B Topic: Atomic Orbitals 3. Which principle(s)
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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 interactions‚ 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. Also‚ an electron positioned between two nuclei
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invented aqua-ammonia absorption system in 1860. Water is a strong absorbent of NH3. If NH3 is kept in a vessel that is exposed to another vessel containing water‚ the strong absorption potential of water will cause evaporation of NH3 requiring no compressor to drive the vapours. A liquid pump is used to increase the pressure of strong solution. The strong solution is then heated in a generator and passed through a rectification column to separate the water from ammonia. The ammonia vapour is then
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