CHEM1901/3 Tutorials The problem sheets on the following pages
... A Brief History and Apparent Contradictions Although E = mc 2 began as only a minor component of the theory of special relativity, it soon became its most widely recognized feature. As modern physics developed in the 20th century, nuclear and subatomic particle reactions were discovered that could b ...
... A Brief History and Apparent Contradictions Although E = mc 2 began as only a minor component of the theory of special relativity, it soon became its most widely recognized feature. As modern physics developed in the 20th century, nuclear and subatomic particle reactions were discovered that could b ...
chem A exercise package C
... Many formulas for substances cannot be explained in terms of ionic bonding. Consider the substance Cl2O. Both the chlorine and the oxygen atom need more electrons for a stable electron population. A model proposed that would allow both atoms to gain electrons is shown in the diagram on this page. Th ...
... Many formulas for substances cannot be explained in terms of ionic bonding. Consider the substance Cl2O. Both the chlorine and the oxygen atom need more electrons for a stable electron population. A model proposed that would allow both atoms to gain electrons is shown in the diagram on this page. Th ...
Mixtures: Classification and Separation
... It is important to learn some of the group (family) names. Group 1A(1), except for hydrogen, consists of the alkali metals, and Group 2A(2) consists of the alkaline earth metals. Both groups consist of highly reactive elements. The halogens, Group 7A(17), are highly reactive nonmetals, whereas the n ...
... It is important to learn some of the group (family) names. Group 1A(1), except for hydrogen, consists of the alkali metals, and Group 2A(2) consists of the alkaline earth metals. Both groups consist of highly reactive elements. The halogens, Group 7A(17), are highly reactive nonmetals, whereas the n ...
Beginning Chemistry
... Chemistry is the study of matter, including its composition, its properties, its structure, the changes which it undergoes, and the laws governing those changes. Matter is anything that has mass and occupies space. Any material object, no matter how large or small, is composed of matter. In contrast ...
... Chemistry is the study of matter, including its composition, its properties, its structure, the changes which it undergoes, and the laws governing those changes. Matter is anything that has mass and occupies space. Any material object, no matter how large or small, is composed of matter. In contrast ...
lecture slides file
... color, density, taste/odor, melting/boiling point). Chemical properties describe the ability of the substance to form new substances, either by decomposition or reaction with other substances (corrosiveness, ...
... color, density, taste/odor, melting/boiling point). Chemical properties describe the ability of the substance to form new substances, either by decomposition or reaction with other substances (corrosiveness, ...
An enquiry into theoretical bioinorganic chemistry: How heuristic is
... Eel,n, which also directly provides their relative energies (at 0 K without zero-point vibrational effects). Molecular properties of these structures that may eventually allow one to identify them by experiment are obtained from Eel,n by differentiation with respect to external perturbations like el ...
... Eel,n, which also directly provides their relative energies (at 0 K without zero-point vibrational effects). Molecular properties of these structures that may eventually allow one to identify them by experiment are obtained from Eel,n by differentiation with respect to external perturbations like el ...
Chemistry HSC - The Bored of Studies Community
... 2) Dibromoethane - Used as a petrol additive - halogen reactions are useful for distinguishing between saturated and unsaturated hydrocarbons. E.g. A non aqueous solution of bromine (e.g. solvent carbon tetrachloride) when added to an alkene causes the solution to lose its colour as bromine becomes ...
... 2) Dibromoethane - Used as a petrol additive - halogen reactions are useful for distinguishing between saturated and unsaturated hydrocarbons. E.g. A non aqueous solution of bromine (e.g. solvent carbon tetrachloride) when added to an alkene causes the solution to lose its colour as bromine becomes ...
chapter 5 - chemical reactions
... 1. HCl(aq) + NaOH(aq) NaCl(aq) + H2O(l) 2. H2SO4(aq) + 2 KOH(aq) K2SO4(aq) + 2 H2O(l) 3. HC2H3O2(aq) + NaOH(aq) NaC2H3O2(aq) + H2O(l) Some double-displacement reactions may result in both the formation of precipitates and water. They can be classified as both precipitation and acid-base reacti ...
... 1. HCl(aq) + NaOH(aq) NaCl(aq) + H2O(l) 2. H2SO4(aq) + 2 KOH(aq) K2SO4(aq) + 2 H2O(l) 3. HC2H3O2(aq) + NaOH(aq) NaC2H3O2(aq) + H2O(l) Some double-displacement reactions may result in both the formation of precipitates and water. They can be classified as both precipitation and acid-base reacti ...
Step 2
... number to each element wherever it appears in the equation. If the reaction is a redox reaction, identify the element that undergoes an increase in oxidation number and the elements the undergoes a decrease. Find the numerical values of the increase and decrease. Determine the smallest whole-number ...
... number to each element wherever it appears in the equation. If the reaction is a redox reaction, identify the element that undergoes an increase in oxidation number and the elements the undergoes a decrease. Find the numerical values of the increase and decrease. Determine the smallest whole-number ...
Equation Writing Information
... reacts with a base (salt and water being formed). Example Write the net ionic equation for the reaction of sulphur dioxide gas with sodium hydroxide solution Answer: SO2(g) + 2OH-(aq) ---> SO32-(aq) + H 2O MISCELLANEOUS REACTIONS INVOLVING NaOH AND KOH KOH(aq) and Hydrogen Sulphide (H2S) gas Hydroge ...
... reacts with a base (salt and water being formed). Example Write the net ionic equation for the reaction of sulphur dioxide gas with sodium hydroxide solution Answer: SO2(g) + 2OH-(aq) ---> SO32-(aq) + H 2O MISCELLANEOUS REACTIONS INVOLVING NaOH AND KOH KOH(aq) and Hydrogen Sulphide (H2S) gas Hydroge ...
physical setting chemistry
... Part C questions in your answer booklet. All work should be written in pen, except for graphs and drawings, which should be done in pencil. You may use scrap paper to work out the answers to the questions, but be sure to record all your answers on your separate answer sheet and in your answer bookle ...
... Part C questions in your answer booklet. All work should be written in pen, except for graphs and drawings, which should be done in pencil. You may use scrap paper to work out the answers to the questions, but be sure to record all your answers on your separate answer sheet and in your answer bookle ...
Common Curriculum Map Discipline: Science Course: Chemistry
... 3. Define the photoelectric effect and explain why it happens. 4. Arrange various types of electromagnetic radiation (X-rays, UV light, visible light, infrared light, radio waves) in order of increasing energy. 5. Explain how and why atoms give off light. 6. Explain why each element has a unique lin ...
... 3. Define the photoelectric effect and explain why it happens. 4. Arrange various types of electromagnetic radiation (X-rays, UV light, visible light, infrared light, radio waves) in order of increasing energy. 5. Explain how and why atoms give off light. 6. Explain why each element has a unique lin ...
Ch 8 Lecture Notes
... ionic bond depended on the product of the charges, divided by the internuclear distance. The solubility of ionic compounds generally follows the trend that the greater the charge, and the shorter the internuclear distance, the more insoluble the compound is. α (alpha) means “is proportional to” Q+ = ...
... ionic bond depended on the product of the charges, divided by the internuclear distance. The solubility of ionic compounds generally follows the trend that the greater the charge, and the shorter the internuclear distance, the more insoluble the compound is. α (alpha) means “is proportional to” Q+ = ...
Chapter 5
... but our computed values are slightly longer. The values that have been reported for the C-C bond are between 1.233 and 1.276 Å, and our value is in this range. We compute that the acetylene coordination process is somewhat endothermic. The energy required to form complex 3 from 1 amounts to 5.4 kcal ...
... but our computed values are slightly longer. The values that have been reported for the C-C bond are between 1.233 and 1.276 Å, and our value is in this range. We compute that the acetylene coordination process is somewhat endothermic. The energy required to form complex 3 from 1 amounts to 5.4 kcal ...
CHAPTER 8 PERIODIC RELATIONSHIPS AMONG THE ELEMENTS
... electrons are removed from the highest occupied n shell. In the formation of an anion from the neutral atom of a representative element, one or more electrons are added to the highest partially filled n shell. Representative elements typically gain or lose electrons to achieve a stable noble gas ele ...
... electrons are removed from the highest occupied n shell. In the formation of an anion from the neutral atom of a representative element, one or more electrons are added to the highest partially filled n shell. Representative elements typically gain or lose electrons to achieve a stable noble gas ele ...
3 - Rates
... activated complex is formed. At this point no bond breaking or bond making is occuring. 3 - At the same time new bonds are starting to form between H and Cl as H nuclei attract Cl electrons and Cl nuclei attract H electrons 2 - As the reacting molecules5 - If the reaction approach their electrons st ...
... activated complex is formed. At this point no bond breaking or bond making is occuring. 3 - At the same time new bonds are starting to form between H and Cl as H nuclei attract Cl electrons and Cl nuclei attract H electrons 2 - As the reacting molecules5 - If the reaction approach their electrons st ...
Study guide for final
... 5) Lewis theory predicts that the formula for a compound made of aluminum and phosphorus is AlP. 6) The correct Lewis structure for CO2 shows that the carbon atom has two sets of lone pair electrons. 7) The VSEPR theory predicts that the H-C-H angle in CH4 measures 120°. 8) When you have 4 electron ...
... 5) Lewis theory predicts that the formula for a compound made of aluminum and phosphorus is AlP. 6) The correct Lewis structure for CO2 shows that the carbon atom has two sets of lone pair electrons. 7) The VSEPR theory predicts that the H-C-H angle in CH4 measures 120°. 8) When you have 4 electron ...
Chem 105 Final Exam
... Your answer:______________ 39. The correct order of increasing electronegativity is ______________ . a) As < Ga < K < Cs b) Cs < K < Ga < As c) Ga < As < K < Cs d) K < Ga < As < Cs Your answer:______________ 40. List the following atoms and ions in an order of increasing atomic size: K+, Cl-, Ar, Ca ...
... Your answer:______________ 39. The correct order of increasing electronegativity is ______________ . a) As < Ga < K < Cs b) Cs < K < Ga < As c) Ga < As < K < Cs d) K < Ga < As < Cs Your answer:______________ 40. List the following atoms and ions in an order of increasing atomic size: K+, Cl-, Ar, Ca ...
answers to part a of the national high school
... that the National Examiner expects high school students to know - and what topics might appear on future exams. Unless otherwise stated, the National High School Chemistry Examination is based on the requirements of the Pan-Canadian Protocol for Collaboration on School Curriculum - Common Framework ...
... that the National Examiner expects high school students to know - and what topics might appear on future exams. Unless otherwise stated, the National High School Chemistry Examination is based on the requirements of the Pan-Canadian Protocol for Collaboration on School Curriculum - Common Framework ...
SED122 - National Open University of Nigeria
... A chemical reaction involves the reshuffling of atoms from one set of combinations to another. In the reshuffling, one compound is converted to another. The smallest units that can take part in chemical reactions are the atoms and molecules. A chemical equation is often used to summarise the reactio ...
... A chemical reaction involves the reshuffling of atoms from one set of combinations to another. In the reshuffling, one compound is converted to another. The smallest units that can take part in chemical reactions are the atoms and molecules. A chemical equation is often used to summarise the reactio ...
unit_k_reading_notes
... We know that we can write a word equation for the synthesis of water from hydrogen and oxygen: Hydrogen gas + Oxygen gas water This can also be written as H2 + O2 H2O There is a phrase that you have definitely heard of before: “Matter is neither created nor destroyed.” This is actually the resul ...
... We know that we can write a word equation for the synthesis of water from hydrogen and oxygen: Hydrogen gas + Oxygen gas water This can also be written as H2 + O2 H2O There is a phrase that you have definitely heard of before: “Matter is neither created nor destroyed.” This is actually the resul ...