Topic 5 Energetics File
... Definitions Average bond enthalpy: The average enthalpy change of breaking one mole of a bond in a gaseous atom into its constituent gaseous atoms. Born-Haber cycle: Energy cycles for the formation of ionic compounds. If there is little agreement between the theoretical and experimental values, thi ...
... Definitions Average bond enthalpy: The average enthalpy change of breaking one mole of a bond in a gaseous atom into its constituent gaseous atoms. Born-Haber cycle: Energy cycles for the formation of ionic compounds. If there is little agreement between the theoretical and experimental values, thi ...
Compounds
... Molecular formula may be same as the empirical formula May be a multiple of the empirical formula M.F = (E.F) x n Multiple (n ) = M.F. mass/ E.F mass Can derive % composition from a chemical formula To determine the molecular formula, you need to know the empirical formula and the molar mass ...
... Molecular formula may be same as the empirical formula May be a multiple of the empirical formula M.F = (E.F) x n Multiple (n ) = M.F. mass/ E.F mass Can derive % composition from a chemical formula To determine the molecular formula, you need to know the empirical formula and the molar mass ...
GCE Getting Started - Edexcel
... Plot a graph of IE across a period and / or down a group and use these to help explain the quantum model for electron configurations. ...
... Plot a graph of IE across a period and / or down a group and use these to help explain the quantum model for electron configurations. ...
Chapter 19.1 Balancing Redox Equations
... According to the collision theory of kinetics, which statement best describes the rate of a chemical reaction? a) All collisions result in a chemical reaction. b) The greater the difference in energy between the reactants and the transition state, the faster is the reaction. c) All collisions betwee ...
... According to the collision theory of kinetics, which statement best describes the rate of a chemical reaction? a) All collisions result in a chemical reaction. b) The greater the difference in energy between the reactants and the transition state, the faster is the reaction. c) All collisions betwee ...
Chemistry XII - Kendriya Vidyalaya IIM,Lucknow
... Where z is electrochemical equivalent. Unit of electrochemical equivalent is gram/coulomb Faraday is charge on 1 mole of electrons. ...
... Where z is electrochemical equivalent. Unit of electrochemical equivalent is gram/coulomb Faraday is charge on 1 mole of electrons. ...
Subject Area Standard Area Organizing Category Grade Level
... CHEM.A.2.2.2: Predict characteristics of an atom or an ion based on its location on the periodic table (e.g., number of valence electrons, potential types of bonds, reactivity). ...
... CHEM.A.2.2.2: Predict characteristics of an atom or an ion based on its location on the periodic table (e.g., number of valence electrons, potential types of bonds, reactivity). ...
BIOL 157 * BIOLOGICAL CHEMISTRY Lecture 6
... • When sucrose is hydrolysed by an acid or enzyme to form an invert sugar, the rate of inversion can be monitored by measuring the change in optical rotation of the sucrose solution in given time intervals. Measurement of radioactivity • In radiochemical assay a reactant is radioactively labelled, l ...
... • When sucrose is hydrolysed by an acid or enzyme to form an invert sugar, the rate of inversion can be monitored by measuring the change in optical rotation of the sucrose solution in given time intervals. Measurement of radioactivity • In radiochemical assay a reactant is radioactively labelled, l ...
4_ Chemical reactions
... 4.6 Classification of Chemical Reactions There is no comprehensive classification scheme that would accommodate all known chemical reactions. One approach is to classify reactions into four types: combination, decomposition, single replacement and double replacement reactions. I) Combination Reacti ...
... 4.6 Classification of Chemical Reactions There is no comprehensive classification scheme that would accommodate all known chemical reactions. One approach is to classify reactions into four types: combination, decomposition, single replacement and double replacement reactions. I) Combination Reacti ...
Slide 1
... PT contains exactly 6.02x1023 atoms of that element. • And is equal to how much 1 mole of that sample would weigh in grams ...
... PT contains exactly 6.02x1023 atoms of that element. • And is equal to how much 1 mole of that sample would weigh in grams ...
chapter 21 chemistry of the main-group elements i
... density and polarizing power of Ca2+ is much less than that of Be2+, it is much easier to drive off the coordinated water molecules by heating the solid. When CaCl2 6H 2 O is dissolved in water, Ca2+(aq) and Cl−(aq) are produced. However, the charge density of the Ca2+ ion is too low to affect the ...
... density and polarizing power of Ca2+ is much less than that of Be2+, it is much easier to drive off the coordinated water molecules by heating the solid. When CaCl2 6H 2 O is dissolved in water, Ca2+(aq) and Cl−(aq) are produced. However, the charge density of the Ca2+ ion is too low to affect the ...
Core_Class_Science_Chemistry_for_the_web 838.3 KB
... A variable is a quantity or condition that can have more than one value An independent variable is the variable you plan to change. The dependent variable is the variable of the changes in value in response to the change in the independent variable. A control is a standard for comparison in an exper ...
... A variable is a quantity or condition that can have more than one value An independent variable is the variable you plan to change. The dependent variable is the variable of the changes in value in response to the change in the independent variable. A control is a standard for comparison in an exper ...
redox reaction - Seattle Central College
... Earlier in the quarter we defined a solution as a homogeneous mixture; a random combination of two or more things. The part of the solution we have the most of is the solvent and the minor components of a solution are referred to as the solutes. Water is the most common solvent and a good one for io ...
... Earlier in the quarter we defined a solution as a homogeneous mixture; a random combination of two or more things. The part of the solution we have the most of is the solvent and the minor components of a solution are referred to as the solutes. Water is the most common solvent and a good one for io ...
5 organic chemistry: functional groups
... involves the transfer of atoms—in this case, hydrogen atoms. There are so many atomtransfer reactions that chemists developed the concept of oxidation number (see Chapter 5) to extend the idea of oxidation and reduction to reactions in which electrons aren’t necessarily gained or lost. Oxidation inv ...
... involves the transfer of atoms—in this case, hydrogen atoms. There are so many atomtransfer reactions that chemists developed the concept of oxidation number (see Chapter 5) to extend the idea of oxidation and reduction to reactions in which electrons aren’t necessarily gained or lost. Oxidation inv ...
Higher Chemistry Resources Guide - Glow Blogs
... Learners should encounter covalent molecular compounds that contain a metal. Tin(IV) iodide can be formed by gently heating tin and iodine in toluene in a small conical flask. When the mixture is allowed to cool, yellow-brown crystals form which can be collected by filtration. Melting point of SnI4 ...
... Learners should encounter covalent molecular compounds that contain a metal. Tin(IV) iodide can be formed by gently heating tin and iodine in toluene in a small conical flask. When the mixture is allowed to cool, yellow-brown crystals form which can be collected by filtration. Melting point of SnI4 ...
Li K-edge XANES and Li(1s) XPS Spectra of Lithium Compounds
... XANES spectra though to Group II with other lithium acylates on XPS spectra. A further study should be needed to get convincible interpretation for the results of these spectra. The spectra of some lithium compounds will be re-measured. All main peaks will be assigned from the results of DV-Xα molec ...
... XANES spectra though to Group II with other lithium acylates on XPS spectra. A further study should be needed to get convincible interpretation for the results of these spectra. The spectra of some lithium compounds will be re-measured. All main peaks will be assigned from the results of DV-Xα molec ...
Higher Chemistry Resources Guide - Glow Blogs
... Learners should encounter covalent molecular compounds that contain a metal. Tin(IV) iodide can be formed by gently heating tin and iodine in toluene in a small conical flask. When the mixture is allowed to cool, yellow-brown crystals form which can be collected by filtration. Melting point of SnI4 ...
... Learners should encounter covalent molecular compounds that contain a metal. Tin(IV) iodide can be formed by gently heating tin and iodine in toluene in a small conical flask. When the mixture is allowed to cool, yellow-brown crystals form which can be collected by filtration. Melting point of SnI4 ...
Scope of Computational Organometallic Chemistry Structure, Reactivity and Properties
... area of expertise, organometallic chemistry manages to join organic and inorganic worlds, taking advantage from both of them (Figure 1.1). Common organic chemistry is plenty of covalent bonds and relatively restricted valences, whereas inorganic species exhibit ionic and dative bonds in a wide range ...
... area of expertise, organometallic chemistry manages to join organic and inorganic worlds, taking advantage from both of them (Figure 1.1). Common organic chemistry is plenty of covalent bonds and relatively restricted valences, whereas inorganic species exhibit ionic and dative bonds in a wide range ...
EXAM IIR - Academics
... 20. In another, parallel universe, the charge/mass ratio of a fundamental particle was measured and found to be + 5.685 x 10-12 coulombs/kg. From this one can conclude that: (A) The mass of the particle must be very large and/or the charge must be very small. (B) The particle has a net negative char ...
... 20. In another, parallel universe, the charge/mass ratio of a fundamental particle was measured and found to be + 5.685 x 10-12 coulombs/kg. From this one can conclude that: (A) The mass of the particle must be very large and/or the charge must be very small. (B) The particle has a net negative char ...
Chapter 6 Ionic and Molecular Compounds
... STEP 1 Identify the cation and anion. A. CaO: The cation, Ca2+, is from Group 2A (2), and the anion, O2−, is from Group 6A (16). B. Al2O3: The cation, Al3+, is from Group 3A (13), and the anion, O2−, is from Group 6A (16). C. MgCl2: The cation, Mg2+, is from Group 2A (2), and the anion, Cl−, is from ...
... STEP 1 Identify the cation and anion. A. CaO: The cation, Ca2+, is from Group 2A (2), and the anion, O2−, is from Group 6A (16). B. Al2O3: The cation, Al3+, is from Group 3A (13), and the anion, O2−, is from Group 6A (16). C. MgCl2: The cation, Mg2+, is from Group 2A (2), and the anion, Cl−, is from ...
CHEMISTRY 133 LECTURE / STUDY GUIDE FOR R.H. LANGLEY
... zinc chloride (ZnCl2). d. PH3 burns in oxygen gas to produce water and diphosphorus pentoxide. e. silicon dioxide reacts with carbon at high temperatures to produce elemental silicon and carbon monoxide gas. Answers: ...
... zinc chloride (ZnCl2). d. PH3 burns in oxygen gas to produce water and diphosphorus pentoxide. e. silicon dioxide reacts with carbon at high temperatures to produce elemental silicon and carbon monoxide gas. Answers: ...