ordinary level chemistry syllabus
... The new chemistry syllabus guides the interaction between the teacher and the learner through the learning processes and highlights the essential practical skills and competencies a learner should acquire during and at the end of each unit of learning. 1.2. Rationale of teaching and learning of chem ...
... The new chemistry syllabus guides the interaction between the teacher and the learner through the learning processes and highlights the essential practical skills and competencies a learner should acquire during and at the end of each unit of learning. 1.2. Rationale of teaching and learning of chem ...
Chemical Reaction Stoichiometry (CRS): A Tutorial
... all of chemistry and chemical engineering, including reaction kinetics and reactor design, reaction equilibrium, and reaction “book-keeping” in general. If chemical equations are to be used to express this concept, it is important to have a universal, systematic method for generating a proper set fo ...
... all of chemistry and chemical engineering, including reaction kinetics and reactor design, reaction equilibrium, and reaction “book-keeping” in general. If chemical equations are to be used to express this concept, it is important to have a universal, systematic method for generating a proper set fo ...
ap 2005 chemistry_b scoring guidelines - AP Central
... Write the formulas to show the reactants and the products for any FIVE of the laboratory situations described below. Answers to more than five choices will not be graded. In all cases, a reaction occurs. Assume that solutions are aqueous unless otherwise indicated. Represent substances in solution a ...
... Write the formulas to show the reactants and the products for any FIVE of the laboratory situations described below. Answers to more than five choices will not be graded. In all cases, a reaction occurs. Assume that solutions are aqueous unless otherwise indicated. Represent substances in solution a ...
Chemical Dynamics at Surfaces
... Irving Langmuir was born in Brooklyn, New York, on January 31, 1881, as the third of four sons of Charles Langmuir and Sadie, neé Comings. His early education was obtained in various schools and institutes in the USA, and in Paris (1892-1895). He graduated as a metallurgical engineer from the School ...
... Irving Langmuir was born in Brooklyn, New York, on January 31, 1881, as the third of four sons of Charles Langmuir and Sadie, neé Comings. His early education was obtained in various schools and institutes in the USA, and in Paris (1892-1895). He graduated as a metallurgical engineer from the School ...
tro2_ppt_lecture_04 - Louisiana Tech University
... Problem Strategy: Determine how many grams of glucose (C6H6O6) would be produced by the plant if 37.8 grams of CO2 is consumed. 1. Need a balanced equation: 6 CO2(g) + 6 H2O(l) C6H6O6(s) + 6 O2(g) 2. Determine moles of CO2 consumed. 37.8 g CO2 x (1 mol CO2/44.0 g) = 0.859 mol CO2 3. Determine how ...
... Problem Strategy: Determine how many grams of glucose (C6H6O6) would be produced by the plant if 37.8 grams of CO2 is consumed. 1. Need a balanced equation: 6 CO2(g) + 6 H2O(l) C6H6O6(s) + 6 O2(g) 2. Determine moles of CO2 consumed. 37.8 g CO2 x (1 mol CO2/44.0 g) = 0.859 mol CO2 3. Determine how ...
AP Chemistry Lab Manual
... 1. Write your name and class on the front cover. 2. In black or blue ink, number all the right hand pages on the lower right corner if they are not already numbered. 3. Save the first 2 pages for a Table of Contents. This should be kept current as you proceed. Each time you write up a lab, place the ...
... 1. Write your name and class on the front cover. 2. In black or blue ink, number all the right hand pages on the lower right corner if they are not already numbered. 3. Save the first 2 pages for a Table of Contents. This should be kept current as you proceed. Each time you write up a lab, place the ...
File
... 1. Write your name and class on the front cover. 2. In black or blue ink, number all the right hand pages on the lower right corner if they are not already numbered. 3. Save the first 2 pages for a Table of Contents. This should be kept current as you proceed. Each time you write up a lab, place the ...
... 1. Write your name and class on the front cover. 2. In black or blue ink, number all the right hand pages on the lower right corner if they are not already numbered. 3. Save the first 2 pages for a Table of Contents. This should be kept current as you proceed. Each time you write up a lab, place the ...
1412e3 - studylib.net
... 27. A student gave a molecule the following name; 3-methyl-4isopropylpentane. However, the professor pointed out that, although the molecule could be correctly drawn from this name, the name did not follow systematic (IUPAC) rules. What is the correct (IUPAC) name of the molecule? 28. Identify the f ...
... 27. A student gave a molecule the following name; 3-methyl-4isopropylpentane. However, the professor pointed out that, although the molecule could be correctly drawn from this name, the name did not follow systematic (IUPAC) rules. What is the correct (IUPAC) name of the molecule? 28. Identify the f ...
chapter 21
... Ea 1.03 105 J/mol 103 kJ/mol Do you need to know the order of the reaction to find the activation energy? Is it possible to have a negative activation energy? What would a potential energy versus reaction coordinate diagram look like in such a ...
... Ea 1.03 105 J/mol 103 kJ/mol Do you need to know the order of the reaction to find the activation energy? Is it possible to have a negative activation energy? What would a potential energy versus reaction coordinate diagram look like in such a ...
Ch. 18 Class PowerPoint
... • This principle is true for all dynamic equilibria, chemical as well as physical. ...
... • This principle is true for all dynamic equilibria, chemical as well as physical. ...
Document
... powdered solids are more reactive than “blocks” more surface area for contact with other reactants certain types of chemicals are more reactive than others e.g., the activity series of metals ions react faster than molecules no bonds need to be broken ...
... powdered solids are more reactive than “blocks” more surface area for contact with other reactants certain types of chemicals are more reactive than others e.g., the activity series of metals ions react faster than molecules no bonds need to be broken ...
Chemical reaction
A chemical reaction is a process that leads to the transformation of one set of chemical substances to another. Classically, chemical reactions encompass changes that only involve the positions of electrons in the forming and breaking of chemical bonds between atoms, with no change to the nuclei (no change to the elements present), and can often be described by a chemical equation. Nuclear chemistry is a sub-discipline of chemistry that involves the chemical reactions of unstable and radioactive elements where both electronic and nuclear changes may occur.The substance (or substances) initially involved in a chemical reaction are called reactants or reagents. Chemical reactions are usually characterized by a chemical change, and they yield one or more products, which usually have properties different from the reactants. Reactions often consist of a sequence of individual sub-steps, the so-called elementary reactions, and the information on the precise course of action is part of the reaction mechanism. Chemical reactions are described with chemical equations, which symbolically present the starting materials, end products, and sometimes intermediate products and reaction conditions.Chemical reactions happen at a characteristic reaction rate at a given temperature and chemical concentration. Typically, reaction rates increase with increasing temperature because there is more thermal energy available to reach the activation energy necessary for breaking bonds between atoms.Reactions may proceed in the forward or reverse direction until they go to completion or reach equilibrium. Reactions that proceed in the forward direction to approach equilibrium are often described as spontaneous, requiring no input of free energy to go forward. Non-spontaneous reactions require input of free energy to go forward (examples include charging a battery by applying an external electrical power source, or photosynthesis driven by absorption of electromagnetic radiation in the form of sunlight).Different chemical reactions are used in combinations during chemical synthesis in order to obtain a desired product. In biochemistry, a consecutive series of chemical reactions (where the product of one reaction is the reactant of the next reaction) form metabolic pathways. These reactions are often catalyzed by protein enzymes. Enzymes increase the rates of biochemical reactions, so that metabolic syntheses and decompositions impossible under ordinary conditions can occur at the temperatures and concentrations present within a cell.The general concept of a chemical reaction has been extended to reactions between entities smaller than atoms, including nuclear reactions, radioactive decays, and reactions between elementary particles as described by quantum field theory.