Document
... It will include questions on analysis and evaluation of practical work. Quality of written communication will also be assessed in this section. ...
... It will include questions on analysis and evaluation of practical work. Quality of written communication will also be assessed in this section. ...
Practice problems for chapter 1, 3 and 5 1) A small amount of salt
... 18) Which of the following has the same number of significant figures as the number 1.00310? A) 1 × 106 B) 199.791 C) 8.66 D) 5.119 E) 100 19) A wooden object has a mass of 10.782 g and occupies a volume of 13.72 mL. What is the density of the object determined to an appropriate number of significan ...
... 18) Which of the following has the same number of significant figures as the number 1.00310? A) 1 × 106 B) 199.791 C) 8.66 D) 5.119 E) 100 19) A wooden object has a mass of 10.782 g and occupies a volume of 13.72 mL. What is the density of the object determined to an appropriate number of significan ...
Week 1 - School of Chemical Sciences
... web. A one-page summary of one paper is due in section (JACS communication format recommended). All papers will be discussed in section and a familiarity with each is expected and may be tested for on exams. Literature summaries should clearly and succinctly convey the principal objective, results, ...
... web. A one-page summary of one paper is due in section (JACS communication format recommended). All papers will be discussed in section and a familiarity with each is expected and may be tested for on exams. Literature summaries should clearly and succinctly convey the principal objective, results, ...
Re-typed from The Ultimate Chemical Equations Handbook by
... of water molecules needs to be adjusted. 5. If there is an odd number of an element on one side and an even number on the other, the odd number will need to be evened out – so use a coefficient of 2 for that substance. 6. If there are polyatomic ions that remain together as a unit during the reactio ...
... of water molecules needs to be adjusted. 5. If there is an odd number of an element on one side and an even number on the other, the odd number will need to be evened out – so use a coefficient of 2 for that substance. 6. If there are polyatomic ions that remain together as a unit during the reactio ...
Organic Naming Notes
... two carbon groups. Naming: 1. Name the carbon chains coming off the oxygen as alkyl groups. 2. End the name in ether. 3. Put a the prefix di on the name of the carbon chain if they repeat themselves ...
... two carbon groups. Naming: 1. Name the carbon chains coming off the oxygen as alkyl groups. 2. End the name in ether. 3. Put a the prefix di on the name of the carbon chain if they repeat themselves ...
Zumdahl`s Chap. 4 - The University of Texas at Dallas
... Use moles divided by Final Volume to get concentration of leftovers. ...
... Use moles divided by Final Volume to get concentration of leftovers. ...
Chapter 1
... *Notes-A ______Subscript_________ is a number written below and to the right of a chemical symbol. C6H12O6 The 6, 12, and 6 are all subscripts. *To find the number of atoms in a compound you should __add____ the subscripts. *Notes-If there is no subscript, only __1_____ atom of that element is prese ...
... *Notes-A ______Subscript_________ is a number written below and to the right of a chemical symbol. C6H12O6 The 6, 12, and 6 are all subscripts. *To find the number of atoms in a compound you should __add____ the subscripts. *Notes-If there is no subscript, only __1_____ atom of that element is prese ...
9077590 Chem. Rege. Jan. 01
... 14 What happens when NaCl(s) is dissolved in water? (1) Cl– ions are attracted to the oxygen atoms of water molecules. (2) Na+ ions are attracted to the oxygen atoms of water molecules. (3) Cl– ions are repelled by the hydrogen atoms of water molecules. (4) Na+ ions are repelled by the oxygen atoms ...
... 14 What happens when NaCl(s) is dissolved in water? (1) Cl– ions are attracted to the oxygen atoms of water molecules. (2) Na+ ions are attracted to the oxygen atoms of water molecules. (3) Cl– ions are repelled by the hydrogen atoms of water molecules. (4) Na+ ions are repelled by the oxygen atoms ...
8.3 Bonding Theories - Chemistry with Mr. Saval
... 8.3 Bonding Theories > Key Concepts Just as an atomic orbital belongs to a particular atom, a molecular orbital belongs to a molecule as a whole. In order to explain the three-dimensional shape of molecules, scientists use the valence-shell electron-pair repulsion theory (VSEPR theory). Orbital hyb ...
... 8.3 Bonding Theories > Key Concepts Just as an atomic orbital belongs to a particular atom, a molecular orbital belongs to a molecule as a whole. In order to explain the three-dimensional shape of molecules, scientists use the valence-shell electron-pair repulsion theory (VSEPR theory). Orbital hyb ...
Worksheet to accompany demos on exchange reactions
... charge, but I wanted to get the simple idea across first and clarify later]. 2) The idea behind oxidation numbers. In the two examples given above, we were dealing with monatomic ions, which have an actual charge, and so it was relatively straightforward to tell if the charge changed upon chemical r ...
... charge, but I wanted to get the simple idea across first and clarify later]. 2) The idea behind oxidation numbers. In the two examples given above, we were dealing with monatomic ions, which have an actual charge, and so it was relatively straightforward to tell if the charge changed upon chemical r ...
Worksheet 4 - Periodic Trends A number of physical and chemical
... A number of physical and chemical properties of elements can be predicted from their position in the Periodic Table. Among these properties are Ionization Energy, Electron Affinity and Atomic/ Ionic Radii. These properties all involve the outer shell (valence) electrons as well as the inner shell (s ...
... A number of physical and chemical properties of elements can be predicted from their position in the Periodic Table. Among these properties are Ionization Energy, Electron Affinity and Atomic/ Ionic Radii. These properties all involve the outer shell (valence) electrons as well as the inner shell (s ...
“No Score” from Exam 1??
... and Molecular Geometry (MG) 1. Draw the Lewis structure of the molecule 2. Count the number of electron domains in the Lewis structure: one bond (single, double, or triple) counts as ______ domain! And one lone pair counts as ______ domain!) 3. The electron domain geometry corresponds to the number ...
... and Molecular Geometry (MG) 1. Draw the Lewis structure of the molecule 2. Count the number of electron domains in the Lewis structure: one bond (single, double, or triple) counts as ______ domain! And one lone pair counts as ______ domain!) 3. The electron domain geometry corresponds to the number ...
Lecture 5 – Chemical Reactions
... In this reaction the oxygen is taking away 3 electrons from each iron to produce Fe3+ ions. However, even in covalent compounds, where the valence electrons are shared, the sharing is not equal when oxygen is involved. i. It is useful to consider that the oxygen is taking the electrons away from the ...
... In this reaction the oxygen is taking away 3 electrons from each iron to produce Fe3+ ions. However, even in covalent compounds, where the valence electrons are shared, the sharing is not equal when oxygen is involved. i. It is useful to consider that the oxygen is taking the electrons away from the ...
Chapter 9 Molecular Geometries and Bonding Theories
... Tetrahedral, if all are bonding pairs Trigonal pyramidal if one is a nonbonding pair Bent if there are two nonbonding pairs ...
... Tetrahedral, if all are bonding pairs Trigonal pyramidal if one is a nonbonding pair Bent if there are two nonbonding pairs ...
Topic 1: Quantitative chemistry (12
... Describe the covalent bond as the electrostatic attraction between a pair of electrons and positively charged nuclei. Describe how the covalent bond is formed as a result of electron sharing. Deduce the Lewis (electron dot) structures of molecules and ions for up to four electron pairs on each atom. ...
... Describe the covalent bond as the electrostatic attraction between a pair of electrons and positively charged nuclei. Describe how the covalent bond is formed as a result of electron sharing. Deduce the Lewis (electron dot) structures of molecules and ions for up to four electron pairs on each atom. ...
Chapter 3
... produced if there is enough oxygen gas to react with all of the CO. A) 7.20 mol B) 44.0 mol C) 3.60 mol D) 1.80 mol Nitrous oxide (N2O) is also called “laughing gas.” It can be prepared by the thermal decomposition of ammonium nitrate (NH4NO3). The other product is H2O. The balanced equation for thi ...
... produced if there is enough oxygen gas to react with all of the CO. A) 7.20 mol B) 44.0 mol C) 3.60 mol D) 1.80 mol Nitrous oxide (N2O) is also called “laughing gas.” It can be prepared by the thermal decomposition of ammonium nitrate (NH4NO3). The other product is H2O. The balanced equation for thi ...
Higher Chemistry - Mobile Resource
... We studied the oxidation of oxalic acid by potassium permanganate at different temperatures. This is a prescribed practical. The reaction between thiosulphate ions and dilute hydrochloric acid can also be used and gives the same shape of graph. These reactions show a marked increase in rate as the t ...
... We studied the oxidation of oxalic acid by potassium permanganate at different temperatures. This is a prescribed practical. The reaction between thiosulphate ions and dilute hydrochloric acid can also be used and gives the same shape of graph. These reactions show a marked increase in rate as the t ...
+ H 2 SO 4(aq) - Rothschild Science
... Conservation of Mass Law of Conservation of Mass In any physical or chemical reaction, mass is neither created nor destroyed; it is conserved! Reactants Products Same number of atoms on both sides of the equation! ...
... Conservation of Mass Law of Conservation of Mass In any physical or chemical reaction, mass is neither created nor destroyed; it is conserved! Reactants Products Same number of atoms on both sides of the equation! ...
Chemical bonding
... bonds. The orbital dipole decreases the effect of the resultant N-F bond moments which reduces dipole moment of NF3. 7) Ans: For the resonance structures of CO32- and CO2 refer to page no 106( Part-1) 8) Ans: a) Deviation in the shape of the molecule b) Alterations in the bond angle in the molecule. ...
... bonds. The orbital dipole decreases the effect of the resultant N-F bond moments which reduces dipole moment of NF3. 7) Ans: For the resonance structures of CO32- and CO2 refer to page no 106( Part-1) 8) Ans: a) Deviation in the shape of the molecule b) Alterations in the bond angle in the molecule. ...
Mechanism and Elementary Reactions
... products for the overall reaction. Elementary steps are the broken-down step by step reaction involving formation of intermediate steps. For more details, you can revisit my other post by clicking here. We also learned about the criteria of valid elementary steps for the overall stoichiometry. Addit ...
... products for the overall reaction. Elementary steps are the broken-down step by step reaction involving formation of intermediate steps. For more details, you can revisit my other post by clicking here. We also learned about the criteria of valid elementary steps for the overall stoichiometry. Addit ...
PS_CHEM7_ch4 - WordPress.com
... • 3. All common sulfides are insoluble except those of Group1A(1), Group 2A(2), and NH4+ ...
... • 3. All common sulfides are insoluble except those of Group1A(1), Group 2A(2), and NH4+ ...
1 - Intro to Electrochemistry
... Its oxidation number _____________________ (more on this later) Example: Cu(s) Cu2+ + 2 eReduction During reduction, a substance ____________ electrons during a chemical reaction The oxidation number of the substance being reduced is ______________ in the ...
... Its oxidation number _____________________ (more on this later) Example: Cu(s) Cu2+ + 2 eReduction During reduction, a substance ____________ electrons during a chemical reaction The oxidation number of the substance being reduced is ______________ in the ...