support material
... Inorganic Chemistry-This branch deals with the study of compounds of all other elements except carbon. It largely concerns itself with the study of minerals found in the Earth's crust. Physical Chemistry-The explanation of fundamental principles governing various chemical phenomena is the main conce ...
... Inorganic Chemistry-This branch deals with the study of compounds of all other elements except carbon. It largely concerns itself with the study of minerals found in the Earth's crust. Physical Chemistry-The explanation of fundamental principles governing various chemical phenomena is the main conce ...
GCE Getting Started - Edexcel
... … remember that ions should have full outer shells. … make sure that when an ion is formed, you put square brackets round the diagram and show the charge. Never … … show the electron shells overlapping. … show electrons being shared (ions are formed by the transfer of electrons!). … remove electrons ...
... … remember that ions should have full outer shells. … make sure that when an ion is formed, you put square brackets round the diagram and show the charge. Never … … show the electron shells overlapping. … show electrons being shared (ions are formed by the transfer of electrons!). … remove electrons ...
answers to part a of the national high school
... cylinder is ruptured, it can become a projectile which is capable of causing significant damage. Gas cylinders (including those using for inflating helium balloons) should always be kept chained to a wall, or chained in a trolley if they are being moved. Of the substances given in the question, only ...
... cylinder is ruptured, it can become a projectile which is capable of causing significant damage. Gas cylinders (including those using for inflating helium balloons) should always be kept chained to a wall, or chained in a trolley if they are being moved. Of the substances given in the question, only ...
Explained answers - Admissions Testing Service
... atoms and oxygen atoms on both the reactant side and the product side of the equation. This is only true for the correct answer, C. ‘a’ can be calculated first. With just one carbon on the right hand side of the equation it can be deduced that a=1. With this knowledge, the remainder of the equation ...
... atoms and oxygen atoms on both the reactant side and the product side of the equation. This is only true for the correct answer, C. ‘a’ can be calculated first. With just one carbon on the right hand side of the equation it can be deduced that a=1. With this knowledge, the remainder of the equation ...
Production of p-wave Feshbach molecules from an ultra
... The two-body interaction is modelled using a separable potential that reproduces the near threshold behaviour of the system close to a Feshbach resonance. For atoms in the same internal state interactions occur in the p-wave, such that they have one quanta of relative orbital angular momentum (ℓ = 1 ...
... The two-body interaction is modelled using a separable potential that reproduces the near threshold behaviour of the system close to a Feshbach resonance. For atoms in the same internal state interactions occur in the p-wave, such that they have one quanta of relative orbital angular momentum (ℓ = 1 ...
Chemical Dynamics, Thermochemistry, and Quantum Chemistry
... This experiment is an adaptation of one published by Mueller and McCorkle1. A traditional physical chemistry experiment is to determine the heat of combustion of a substance using a Parr oxygen bomb and a technique called bomb calorimetry. It is particularly useful to know the heat of combustion (∆C ...
... This experiment is an adaptation of one published by Mueller and McCorkle1. A traditional physical chemistry experiment is to determine the heat of combustion of a substance using a Parr oxygen bomb and a technique called bomb calorimetry. It is particularly useful to know the heat of combustion (∆C ...
No Slide Title
... How many H atoms are in 72.5 g of C3H8O ? 1 mol C3H8O = (3 x 12) + (8 x 1) + 16 = ______ g C3H8O 1 mol C3H8O molecules = ___________ mol H atoms 1 mol H = ___________ atoms H 1 mol C3H8O 8 mol H atoms 6.022 x 1023 H atoms 72.5 g C3H8O x ...
... How many H atoms are in 72.5 g of C3H8O ? 1 mol C3H8O = (3 x 12) + (8 x 1) + 16 = ______ g C3H8O 1 mol C3H8O molecules = ___________ mol H atoms 1 mol H = ___________ atoms H 1 mol C3H8O 8 mol H atoms 6.022 x 1023 H atoms 72.5 g C3H8O x ...
Coordination and Chemistry of Stable Cu (II) Complexes in the Gas
... ammonia, carbon dioxide, and ethene, high-pressure cylinders containing 99% Ar and 1% solvent were used to produce the required mixture of gases. For the remainder of solvents studied in these experiments, argon was passed through a reservoir where the solvents were held in their liquid state. This ...
... ammonia, carbon dioxide, and ethene, high-pressure cylinders containing 99% Ar and 1% solvent were used to produce the required mixture of gases. For the remainder of solvents studied in these experiments, argon was passed through a reservoir where the solvents were held in their liquid state. This ...
The prebiotic molecules observed in the interstellar gas
... many of the interstellar grains have very specific structures, and are in fact large molecules. Determining just what those unknown structures are is a formidable challenge, because the refined spectroscopic techniques used to determine the structures of the known molecules are likely to fail at mol ...
... many of the interstellar grains have very specific structures, and are in fact large molecules. Determining just what those unknown structures are is a formidable challenge, because the refined spectroscopic techniques used to determine the structures of the known molecules are likely to fail at mol ...
Chapter 8 and 9
... From this information you can calculate the amount of carbon and hydrogen in the sample. However since oxygen is in excess you must find oxygen through indirect means (the mass comes from what is not accounted for by carbon and hydrogen, in a sample that only contains CHO). ...
... From this information you can calculate the amount of carbon and hydrogen in the sample. However since oxygen is in excess you must find oxygen through indirect means (the mass comes from what is not accounted for by carbon and hydrogen, in a sample that only contains CHO). ...
Worksheet Significant Figures
... graphs are used when the data is qualitative (descriptive, based on observations or categories of data). Line graphs are used when the data is quantitative (more precise, measured with tools). **VERY IMPORTANT** When designing an experiment, you should have only one independent and one dependent var ...
... graphs are used when the data is qualitative (descriptive, based on observations or categories of data). Line graphs are used when the data is quantitative (more precise, measured with tools). **VERY IMPORTANT** When designing an experiment, you should have only one independent and one dependent var ...
odd - WWW2
... wavelengths in the infrared region that are currently transparent. 14.23 This ion is isoelectronic with nitrogen dioxide. It has a single unpaired electron, so the bond angle is greater than 120º. The bond order would be about 1½ compared to 2 in carbon dioxide. ...
... wavelengths in the infrared region that are currently transparent. 14.23 This ion is isoelectronic with nitrogen dioxide. It has a single unpaired electron, so the bond angle is greater than 120º. The bond order would be about 1½ compared to 2 in carbon dioxide. ...
STUDY GUIDE
... MAIN IDEA: An alkene is a hydrocarbon that has at least one double bond between two carbon atoms. The carbon chain is numbered using the lowest number for the double bond. The root name ends in -ene. An alkyne is a hydrocarbon that has at least one triple bond between two carbon atoms. Naming alkyn ...
... MAIN IDEA: An alkene is a hydrocarbon that has at least one double bond between two carbon atoms. The carbon chain is numbered using the lowest number for the double bond. The root name ends in -ene. An alkyne is a hydrocarbon that has at least one triple bond between two carbon atoms. Naming alkyn ...
Unit #8 - consumerchem
... 7) 5. Balance the elements one at a time by adding coefficients in front of the formulas. a) Remember: no coefficient = 1. b) Multiply coefficients by the subscript to determine the number of atoms. c) Adjust coefficients as necessary. What thing can we determine from a balanced equation? Answer: 1. ...
... 7) 5. Balance the elements one at a time by adding coefficients in front of the formulas. a) Remember: no coefficient = 1. b) Multiply coefficients by the subscript to determine the number of atoms. c) Adjust coefficients as necessary. What thing can we determine from a balanced equation? Answer: 1. ...
Chemistry - Resonance
... The organic compounds containing only carbon and hydrogen are called hydrocarbons. These are the simplest organic compounds and are regarded as parent organic compounds. All other compounds are considered to be derived from them by the replacement of one or more hydrogen atoms by other atoms or grou ...
... The organic compounds containing only carbon and hydrogen are called hydrocarbons. These are the simplest organic compounds and are regarded as parent organic compounds. All other compounds are considered to be derived from them by the replacement of one or more hydrogen atoms by other atoms or grou ...
H o - CashmereChemistry
... 1. Write the data in the form of equations 2. Rewrite the equations to give the desired species on the correct side of the equation. If the reaction must be reversed (perhaps because we require a species to be a reactant and not a product) then the sign of the H must also be ...
... 1. Write the data in the form of equations 2. Rewrite the equations to give the desired species on the correct side of the equation. If the reaction must be reversed (perhaps because we require a species to be a reactant and not a product) then the sign of the H must also be ...
TERMS AND DEFINITIONS IN THERMOCHEMISTRY
... This is the law on which the whole of thermochemistry is based. It states that the enthalpy change for a process does not depend on the nature of any intermediate steps involved in bringing the process about. That is, the enthalpy change does not depend on the path chosen to accomplish the process, ...
... This is the law on which the whole of thermochemistry is based. It states that the enthalpy change for a process does not depend on the nature of any intermediate steps involved in bringing the process about. That is, the enthalpy change does not depend on the path chosen to accomplish the process, ...
GROUP 13 ELEMENTS -THE BORON FAMILY -
... important because it forms gallium arsenide (GaAs), which can convert light directly into electricity. Also due to thermite reaction, aluminum can extract oxygen from water and hydrogen is released. However, as mentioned above, aluminum forms a protective coat in the presence of water. By combining ...
... important because it forms gallium arsenide (GaAs), which can convert light directly into electricity. Also due to thermite reaction, aluminum can extract oxygen from water and hydrogen is released. However, as mentioned above, aluminum forms a protective coat in the presence of water. By combining ...
Chapter 8: Ionic Compounds
... still remain within its nucleus. Reactivity of metals is based on the ease with which they lose valence electrons to achieve a stable octet, or noble gas configuration. Group 1A elements, [noble gas]ns1, lose their one valence electron, forming an ion with a 1+ charge. Group 2A elements, [noble gas] ...
... still remain within its nucleus. Reactivity of metals is based on the ease with which they lose valence electrons to achieve a stable octet, or noble gas configuration. Group 1A elements, [noble gas]ns1, lose their one valence electron, forming an ion with a 1+ charge. Group 2A elements, [noble gas] ...
ism ismismismismismrapidrevisionquestionsismismismismismism
... antiparallel directions in unequal numbers resulting in a net magnetic moment. How would you account for the following? (i) Frenkel defects are not found in ionic solids of nearly equal sizes of cations and anions. (ii) Schottky defects lower the density of a crystalline solid. (iii) Impurity doped ...
... antiparallel directions in unequal numbers resulting in a net magnetic moment. How would you account for the following? (i) Frenkel defects are not found in ionic solids of nearly equal sizes of cations and anions. (ii) Schottky defects lower the density of a crystalline solid. (iii) Impurity doped ...
Chemistry Revision Checklist F4 2017 (inc F3)
... Describe the concept of homologous series as a ‘family’ of similar compounds with similar chemical properties due to the presence of the same functional group Describe the general characteristics of an homologous series Recall that the compounds in a homologous series have the same general formula D ...
... Describe the concept of homologous series as a ‘family’ of similar compounds with similar chemical properties due to the presence of the same functional group Describe the general characteristics of an homologous series Recall that the compounds in a homologous series have the same general formula D ...
first test
... 20. One way of obtaining pure sodium carbonate is through the decomposition of the mineral trona, Na5(CO3)2(HCO3)·2H2O, Na5(CO3)2(HCO3)·2H2O(s) 5Na2CO3(s) + CO2(g) + 3H2O(g) When 1.00 metric ton (1 103 kg) of trona is decomposed, 0.74 metric ton of Na2CO3 is recovered. What is the percent yield ...
... 20. One way of obtaining pure sodium carbonate is through the decomposition of the mineral trona, Na5(CO3)2(HCO3)·2H2O, Na5(CO3)2(HCO3)·2H2O(s) 5Na2CO3(s) + CO2(g) + 3H2O(g) When 1.00 metric ton (1 103 kg) of trona is decomposed, 0.74 metric ton of Na2CO3 is recovered. What is the percent yield ...
STUDY MATERIAL 2015-16 CHEMISTRY CLASS XI
... Inorganic Chemistry-This branch deals with the study of compounds of all other elements except carbon. It largely concerns itself with the study of minerals found in the Earth's crust. Physical Chemistry-The explanation of fundamental principles governing various chemical phenomena is the main conce ...
... Inorganic Chemistry-This branch deals with the study of compounds of all other elements except carbon. It largely concerns itself with the study of minerals found in the Earth's crust. Physical Chemistry-The explanation of fundamental principles governing various chemical phenomena is the main conce ...
Chapter 3 Molecules, Compounds, and Chemical Equations
... their atoms, the order of atom attachment, and the kind of attachment. They do not directly describe the three-dimensional shape but an experienced chemist can make a good shape, guess at it. use lines to represent covalent bonds Each line describes the number of electrons shared by the bonded ...
... their atoms, the order of atom attachment, and the kind of attachment. They do not directly describe the three-dimensional shape but an experienced chemist can make a good shape, guess at it. use lines to represent covalent bonds Each line describes the number of electrons shared by the bonded ...
- Te Kura
... Although there are millions of different substances in the universe, they are all composed from just over 100 known elements. An element is a substance which cannot be broken down further by chemical means. You will come across another definition in lesson 2. More than 100 elements is still a lot of ...
... Although there are millions of different substances in the universe, they are all composed from just over 100 known elements. An element is a substance which cannot be broken down further by chemical means. You will come across another definition in lesson 2. More than 100 elements is still a lot of ...
Resonance (chemistry)
In chemistry, resonance or mesomerism is a way of describing delocalized electrons within certain molecules or polyatomic ions where the bonding cannot be expressed by one single Lewis formula. A molecule or ion with such delocalized electrons is represented by several contributing structures (also called resonance structures or canonical forms).Each contributing structure can be represented by a Lewis structure, with only an integer number of covalent bonds between each pair of atoms within the structure. Several Lewis structures are used collectively to describe the actual molecular structure, which is an approximate intermediate between the canonical forms called a resonance hybrid. Contributing structures differ only in the position of electrons, not in the position of nuclei.Electron delocalization lowers the potential energy of the substance and thus makes it more stable than any of the contributing structures. The difference between the potential energy of the actual structure and that of the contributing structure with the lowest potential energy is called the resonance energy or delocalization energy.Resonance is distinguished from tautomerism and conformational isomerism, which involve the formation of isomers, thus the rearrangement of the nuclear positions.