Teaching with CAChe - Photochemical Dynamics Group
... began when we found unpredicted results; the results often pointed out our own misconceptions about the underlying chemistry. Presently, we site license CAChe software. The site license has made CAChe accessible to faculty and students; CAChe is available on all department and campus computer lab ma ...
... began when we found unpredicted results; the results often pointed out our own misconceptions about the underlying chemistry. Presently, we site license CAChe software. The site license has made CAChe accessible to faculty and students; CAChe is available on all department and campus computer lab ma ...
CHEMISTRY 133 LECTURE / STUDY GUIDE FOR R.H. LANGLEY
... Note: Make sure you read the introduction. © 2016 Sevagram Enterprises without written permission ...
... Note: Make sure you read the introduction. © 2016 Sevagram Enterprises without written permission ...
3: Haloalkanes, Alcohols, Ethers, and Amines
... The general formulas R-X, R-OH, and R-NH2 suggest two different ways to view these classes of compounds. One way is for us to imagine that an alkyl group R replaces H in HNH2 (ammonia), H-OH (water), and the hydrogen halides H-X (X = F, Cl, Br, or I). We can also view haloalkanes (R-X), alcohols (R- ...
... The general formulas R-X, R-OH, and R-NH2 suggest two different ways to view these classes of compounds. One way is for us to imagine that an alkyl group R replaces H in HNH2 (ammonia), H-OH (water), and the hydrogen halides H-X (X = F, Cl, Br, or I). We can also view haloalkanes (R-X), alcohols (R- ...
9/10/10 1 Chemistry 121: Atomic and Molecular Chemistry
... numbers. For example, there are three isotopes of hydrogen. One, simply known as hydrogen, has one proton and no neutrons. The deuterium isotope contains one proton and one neutron, and tritium has one proton and two neutrons. ...
... numbers. For example, there are three isotopes of hydrogen. One, simply known as hydrogen, has one proton and no neutrons. The deuterium isotope contains one proton and one neutron, and tritium has one proton and two neutrons. ...
Section 8.10 Lewis Structures
... • C, N, O, and F should always be assumed to obey the octet rule. • B and Be often have fewer than 8 electrons around them in their compounds. • Second-row elements never exceed the octet rule. • Third-row and heavier elements often satisfy the octet rule but can exceed the octet rule by using their ...
... • C, N, O, and F should always be assumed to obey the octet rule. • B and Be often have fewer than 8 electrons around them in their compounds. • Second-row elements never exceed the octet rule. • Third-row and heavier elements often satisfy the octet rule but can exceed the octet rule by using their ...
California Standards Practice - Student Edition
... Be sure you understand the question before reading the answer choices. Then, make sure to read and consider every answer choice. Remember to carefully consider all the information presented in the test’s graphics. If the test is timed, be sure to pace yourself. Always choose an answer. By eliminatin ...
... Be sure you understand the question before reading the answer choices. Then, make sure to read and consider every answer choice. Remember to carefully consider all the information presented in the test’s graphics. If the test is timed, be sure to pace yourself. Always choose an answer. By eliminatin ...
Basic Agricultural Chemistry - Macmillan Education South Africa
... group share similar chemical properties. The Roman numerals listed above each group are the usual number of valence electrons. For example: l Group IA is the alkali metals where the element has one electron in the orbital, for example sodium, potassium and rubidium. Alkali metals form salts and man ...
... group share similar chemical properties. The Roman numerals listed above each group are the usual number of valence electrons. For example: l Group IA is the alkali metals where the element has one electron in the orbital, for example sodium, potassium and rubidium. Alkali metals form salts and man ...
CfE Advanced Higher Chemistry
... The figure above shows that the electromagnetic spectrum has a variety of ways in which it can be described. At the highest energy, the waves are so tightly packed that they are less than an atom's width apart, whilst at the low energy end the waves are a football pitch or greater apart. In the wave ...
... The figure above shows that the electromagnetic spectrum has a variety of ways in which it can be described. At the highest energy, the waves are so tightly packed that they are less than an atom's width apart, whilst at the low energy end the waves are a football pitch or greater apart. In the wave ...
Chemical Bonding
... a substance that you have classified as ionic, as it is an electrolyte. Like some other ionic compounds that you are familiar with, for example, baking soda (sodium hydrogen carbonate) and chalk (calcium carbonate), it is also brittle and has a high melting temperature. How do we explain the formati ...
... a substance that you have classified as ionic, as it is an electrolyte. Like some other ionic compounds that you are familiar with, for example, baking soda (sodium hydrogen carbonate) and chalk (calcium carbonate), it is also brittle and has a high melting temperature. How do we explain the formati ...
NCERT Solution - Mywayteaching
... Nitrogen owing to its small size has a tendency to form pπ−pπ multiple bonds with itself. Nitrogen thus forms a very stable diatomic molecule, N2. On moving down a group, the tendency to form pπ−pπ bonds decreases (because of the large size of heavier elements). Therefore, phosphorus (like other hea ...
... Nitrogen owing to its small size has a tendency to form pπ−pπ multiple bonds with itself. Nitrogen thus forms a very stable diatomic molecule, N2. On moving down a group, the tendency to form pπ−pπ bonds decreases (because of the large size of heavier elements). Therefore, phosphorus (like other hea ...
Concept Development Studies in Chemistry
... exhibit elemental iron's color, density, hardness, magnetism, etc. Since the properties of the elements are not maintained by the compound, then the compound must not be a simple mixture of the elements. We could, of course, jump directly to the answers to these questions by stating that the element ...
... exhibit elemental iron's color, density, hardness, magnetism, etc. Since the properties of the elements are not maintained by the compound, then the compound must not be a simple mixture of the elements. We could, of course, jump directly to the answers to these questions by stating that the element ...
PowerPoint Version
... Orbitals in cations tend to be more localized (For instance, this parameter might be important in some oxides) ...
... Orbitals in cations tend to be more localized (For instance, this parameter might be important in some oxides) ...
Power Point over chemistry
... Characteristics of a substance that are observed when it reacts (changes) to produce one or more different substances. Example- Water can be changed into hydrogen gas and oxygen gas using an electric current. When water molecules change chemically into hydrogen gas and oxygen gas, we say that a chem ...
... Characteristics of a substance that are observed when it reacts (changes) to produce one or more different substances. Example- Water can be changed into hydrogen gas and oxygen gas using an electric current. When water molecules change chemically into hydrogen gas and oxygen gas, we say that a chem ...
CHEM 101 Fall 09 Final Exam (a)
... a. HCl (aq) + NaOH (aq) → NaCl (aq) + H2O (l) b. 2 Na (s) + 2 H2O (l) → 2 NaOH (aq) + H2 (g) c. CaO (s) + H2O (l) → Ca(OH)2 (s) d. 2 HClO4 (aq) + CaCO3 (s) → Ca(ClO4)2 (aq) + H2O (l) + CO2 (g) e. none of the above reactions are oxidation-reduction reactions 9. What is the oxidation number of C in Ca ...
... a. HCl (aq) + NaOH (aq) → NaCl (aq) + H2O (l) b. 2 Na (s) + 2 H2O (l) → 2 NaOH (aq) + H2 (g) c. CaO (s) + H2O (l) → Ca(OH)2 (s) d. 2 HClO4 (aq) + CaCO3 (s) → Ca(ClO4)2 (aq) + H2O (l) + CO2 (g) e. none of the above reactions are oxidation-reduction reactions 9. What is the oxidation number of C in Ca ...
General Chemistry Discretes Test
... For question 3, the correct choice is A . One is asked in this question to determine which of the choices contains a false description of the gas. Under conditions of high pressure and low temperature, the gas is not behaving ideally and corrections must be made for the volume of the gas molecules a ...
... For question 3, the correct choice is A . One is asked in this question to determine which of the choices contains a false description of the gas. Under conditions of high pressure and low temperature, the gas is not behaving ideally and corrections must be made for the volume of the gas molecules a ...
Class-XII, Summer assignment
... 1. Though nitrogen exhibits +5 oxidation state, it does not form pentahalide. Give reason. Ans: Nitrogen valence electronic configuration ns2np3 due to absence of empty d- orbitals, it can not extend its valence to 5. 2. PH3 has lower boiling point than NH3. Why? Ans: Unlike NH3, PH3 molecules are n ...
... 1. Though nitrogen exhibits +5 oxidation state, it does not form pentahalide. Give reason. Ans: Nitrogen valence electronic configuration ns2np3 due to absence of empty d- orbitals, it can not extend its valence to 5. 2. PH3 has lower boiling point than NH3. Why? Ans: Unlike NH3, PH3 molecules are n ...
380 KB / 39 pages
... solution of sodium acetate, the resulting solution is blue. When 10 mL of a colorless solution of 0.1 M hydrochloric acid are added, the mixture is green. When a further 10 mL of the hydrochloric acid are added, the mixture is yellow. Chemical reactions occurring in these solutions are responsible f ...
... solution of sodium acetate, the resulting solution is blue. When 10 mL of a colorless solution of 0.1 M hydrochloric acid are added, the mixture is green. When a further 10 mL of the hydrochloric acid are added, the mixture is yellow. Chemical reactions occurring in these solutions are responsible f ...
Chemistry MCQs - Target Publications
... ___________ law of combining volumes states that “Whenever gases combine, they do so in simple ratio by volumes”. (A) Avogadro’s (B) Gay Lussac’s (C) Dalton’s (D) Thomson’s The sum of the masses of reactants and products is equal in any physical or chemical reaction. This is in accordance with (A) L ...
... ___________ law of combining volumes states that “Whenever gases combine, they do so in simple ratio by volumes”. (A) Avogadro’s (B) Gay Lussac’s (C) Dalton’s (D) Thomson’s The sum of the masses of reactants and products is equal in any physical or chemical reaction. This is in accordance with (A) L ...
chemistry writing team
... −l to +l including ‘0’. It determines the orientation of orbital. (4) Magnetic spin quantum number (ms) It can take the values of +½ or −½ and determines the orientation of spin. Pauli’s Exclusion Principle : ‘‘No two electrons in an atom can have the same set of four quantum numbers.’’ Two electron ...
... −l to +l including ‘0’. It determines the orientation of orbital. (4) Magnetic spin quantum number (ms) It can take the values of +½ or −½ and determines the orientation of spin. Pauli’s Exclusion Principle : ‘‘No two electrons in an atom can have the same set of four quantum numbers.’’ Two electron ...
ionization 12.3.1
... This occurs when two excited gaseous atoms or molecular moieties interact and the sum of their energies is sufficient to produce a single additive ionic product. Auto-ionization This occurs when an internally supra-excited atom or molecular moiety (in the preionization state) loses an electron spont ...
... This occurs when two excited gaseous atoms or molecular moieties interact and the sum of their energies is sufficient to produce a single additive ionic product. Auto-ionization This occurs when an internally supra-excited atom or molecular moiety (in the preionization state) loses an electron spont ...
1 What is the angular momentum quantum number (l) value for the
... bonds is the most polar based on the electronegativity trends in the periodic table? A C–F CORRECT: The greater the electronegativity difference between the bonding atoms the more polar the bond. Electronegativity generally increases left to right across a period and decreases down a group in the p ...
... bonds is the most polar based on the electronegativity trends in the periodic table? A C–F CORRECT: The greater the electronegativity difference between the bonding atoms the more polar the bond. Electronegativity generally increases left to right across a period and decreases down a group in the p ...
Molecular orbital diagram
A molecular orbital diagram, or MO diagram, is a qualitative descriptive tool explaining chemical bonding in molecules in terms of molecular orbital theory in general and the linear combination of atomic orbitals (LCAO) molecular orbital method in particular. A fundamental principle of these theories is that as atoms bond to form molecules, a certain number of atomic orbitals combine to form the same number of molecular orbitals, although the electrons involved may be redistributed among the orbitals. This tool is very well suited for simple diatomic molecules such as dihydrogen, dioxygen, and carbon monoxide but becomes more complex when discussing even comparatively simple polyatomic molecules, such as methane. MO diagrams can explain why some molecules exist and others do not. They can also predict bond strength, as well as the electronic transitions that can take place.