unit (4) calculations and 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 ...
Spring 2013 Semester Exam Study Guide (Bonding, Nomenclature
... Identify the choice that best completes the statement or answers the question. ____ ...
... Identify the choice that best completes the statement or answers the question. ____ ...
Unit 1 Notes (general chem review)
... families – another name for certain groups group one – alkali metals group two – alkaline earth metals group seventeen – halogens (referred to as halides if you are referring to ions) group eighteen – noble gases or rare gases or inert gases transition metals small block in the middle ...
... families – another name for certain groups group one – alkali metals group two – alkaline earth metals group seventeen – halogens (referred to as halides if you are referring to ions) group eighteen – noble gases or rare gases or inert gases transition metals small block in the middle ...
GC97F Pretest A - American Chemical Society
... (A) The 1 M Ni2+ solution is diluted with H2O. (B) A larger Ni electrode is used. (C) 50 mL of 1 M NaCl solution is added to precipitate PbCl2. (D) More 1 M Pb2+ solution is added to that half-cell. 42. Aluminum is produced commercially by the electrolysis of Al2O3. How many hours would be required ...
... (A) The 1 M Ni2+ solution is diluted with H2O. (B) A larger Ni electrode is used. (C) 50 mL of 1 M NaCl solution is added to precipitate PbCl2. (D) More 1 M Pb2+ solution is added to that half-cell. 42. Aluminum is produced commercially by the electrolysis of Al2O3. How many hours would be required ...
Determining Density through graphing
... The last digit of a measurement expression is uncertain. That is because the last digit is an estimation. Significant figures in a measurement expression comprise all digits that known with certainty, plus one digit that is uncertain. PLACEHOLDERS ARE NOT SIGNFICANT. Rules for determining the number ...
... The last digit of a measurement expression is uncertain. That is because the last digit is an estimation. Significant figures in a measurement expression comprise all digits that known with certainty, plus one digit that is uncertain. PLACEHOLDERS ARE NOT SIGNFICANT. Rules for determining the number ...
Mr. Dehne AP Chem Name: ___________ Date: Per#: ___ AP
... deeply colored permanganate ion and then to measure the absorption of light. The steel is dissolved in nitric acid, producing the manganese (II) ion and nitrogen dioxide gas. This solution is then reacted with an acidic solution containing periodate ion; the products are the permanganate iodate ions ...
... deeply colored permanganate ion and then to measure the absorption of light. The steel is dissolved in nitric acid, producing the manganese (II) ion and nitrogen dioxide gas. This solution is then reacted with an acidic solution containing periodate ion; the products are the permanganate iodate ions ...
Chemistry SOL Review Test
... 62) What is the molecular formula? empirical formula NO2, molar mass = 92.02 g/mol N 14.01(1) +16.00(2) = 46.01 ...
... 62) What is the molecular formula? empirical formula NO2, molar mass = 92.02 g/mol N 14.01(1) +16.00(2) = 46.01 ...
Double Displacement Reactions
... Notice that the positive ions, Ba2+ and Na+, change partners. This reaction is called a double displacement reaction. A double displacement reaction involves the exchange of positive ions between two ionic compounds to form two new ionic compounds. ...
... Notice that the positive ions, Ba2+ and Na+, change partners. This reaction is called a double displacement reaction. A double displacement reaction involves the exchange of positive ions between two ionic compounds to form two new ionic compounds. ...
How Atoms Bond: Ionic Bonds
... have equal numbers of positive protons and negative electrons , the electric charges cancel each other out. Net charge: zero. OK, now back to electrons. While the positive protons are permanently in the atom’s nucleus, the negative electrons in an atom are not: electrons move around in the shells. A ...
... have equal numbers of positive protons and negative electrons , the electric charges cancel each other out. Net charge: zero. OK, now back to electrons. While the positive protons are permanently in the atom’s nucleus, the negative electrons in an atom are not: electrons move around in the shells. A ...
aq - Wikispaces
... • Do the sheet “uncertainty” • The sheet will be corrected in class. • Procedures for an in-class exercise • Make sure your first and last name are on the sheet. • Complete as much of the sheet as you can in the time allotted. Use a pencil or dark colour pen. • When the time is up, follow the teache ...
... • Do the sheet “uncertainty” • The sheet will be corrected in class. • Procedures for an in-class exercise • Make sure your first and last name are on the sheet. • Complete as much of the sheet as you can in the time allotted. Use a pencil or dark colour pen. • When the time is up, follow the teache ...
8. Acids and bases
... • A dative (coordinate) covalent bond is formed. • Note that this definition does not involve protons or hydrogen! ...
... • A dative (coordinate) covalent bond is formed. • Note that this definition does not involve protons or hydrogen! ...
View PDF - Goldschmidt Conference Archive
... Hematite is one of the most abundant and stable iron minerals in Earth’s upper crust, and thus inevitably plays an important role in various bio-geochemical processes, including mass transport, pollutant migration, and microbial metabolism. This mineral is also a promising material in the search for ...
... Hematite is one of the most abundant and stable iron minerals in Earth’s upper crust, and thus inevitably plays an important role in various bio-geochemical processes, including mass transport, pollutant migration, and microbial metabolism. This mineral is also a promising material in the search for ...
Chemistry II Exams and Keys Corrected 2016 Season
... How will it be possible to prepare 10 grams of a brass sample containing 30% of zinc using these two brass samples? Assume that there is no loss of mass during the process. A. Take 7 g of sample 1 and 3 g of sample 2. B. Take 3 g of sample 1 and 7 g of sample 2. C. Take 5 g of sample 1 and 5 g of sa ...
... How will it be possible to prepare 10 grams of a brass sample containing 30% of zinc using these two brass samples? Assume that there is no loss of mass during the process. A. Take 7 g of sample 1 and 3 g of sample 2. B. Take 3 g of sample 1 and 7 g of sample 2. C. Take 5 g of sample 1 and 5 g of sa ...
Stoichiometry Worksheet #4
... 1. Silver sulfide (Ag2S) is the common tarnish on silver objects. What weight of silver sulfide can be made from 1.23 g of hydrogen sulfide (H2S) obtained from a rotten egg? The reaction of formation of silver sulfide is given below: Ag(s) + H2S(g) + O2(g) Ag2S(s) + H2O(l) (Equation must first be b ...
... 1. Silver sulfide (Ag2S) is the common tarnish on silver objects. What weight of silver sulfide can be made from 1.23 g of hydrogen sulfide (H2S) obtained from a rotten egg? The reaction of formation of silver sulfide is given below: Ag(s) + H2S(g) + O2(g) Ag2S(s) + H2O(l) (Equation must first be b ...
Feasibility Study of using FAIMS to Detect Carbonyl Sulfide in Propane
... The UV ionization source is a direct ionization method whereby photons are emitted at energies of 9.6, 10.2, 10.6, 11.2, and 11.8eV and can only ionize chemical species with a first ionization potential less than the emitted energy. Important points to note are that there is no positive mode RIP pre ...
... The UV ionization source is a direct ionization method whereby photons are emitted at energies of 9.6, 10.2, 10.6, 11.2, and 11.8eV and can only ionize chemical species with a first ionization potential less than the emitted energy. Important points to note are that there is no positive mode RIP pre ...
workbook Chem (WP)
... 1. consist of a metal and a nonmetal (cation and an anion) 2. charges must balance in the final formula to form a neutral compound 3. List the characteristics of an ionic compound. 4. Write the formula for the following: a. lithium chloride b. magnesium fluoride c. scandium sulfide d. calcium nitrid ...
... 1. consist of a metal and a nonmetal (cation and an anion) 2. charges must balance in the final formula to form a neutral compound 3. List the characteristics of an ionic compound. 4. Write the formula for the following: a. lithium chloride b. magnesium fluoride c. scandium sulfide d. calcium nitrid ...
AP CHEMISTRY FINAL EXAM THINGS TO KNOW AND REVIEW
... 14. Review the exothermic reactions of the alkali metals with water. 15. Review chapter 7, sect. 7.2 about effective nuclear charge (Zeff). 16. Review the rules for determining the quantum numbers of an element and memorize them. 17. Look up the definition of “equilibrium vapor pressure”. 18. Develo ...
... 14. Review the exothermic reactions of the alkali metals with water. 15. Review chapter 7, sect. 7.2 about effective nuclear charge (Zeff). 16. Review the rules for determining the quantum numbers of an element and memorize them. 17. Look up the definition of “equilibrium vapor pressure”. 18. Develo ...
SCH 4U REVIEW Notes
... organic compound – a compound that contains carbon and usually hydrogen catenation – the property of carbon to form a covalent bond with another carbon atom, forming long chains or rings functional group – a group of atoms in an organic molecule that impart particular physical and chemical character ...
... organic compound – a compound that contains carbon and usually hydrogen catenation – the property of carbon to form a covalent bond with another carbon atom, forming long chains or rings functional group – a group of atoms in an organic molecule that impart particular physical and chemical character ...
1 Chemical Reactions and Equations
... This is a balanced chemical equation but it does not give the following information: (i) The physical state of the reactants and products whether these are solids, liquids or gaseous etc. (ii) Concentration of reactants and products. (iii) Condition of reaction such as temperature, pressure, catalys ...
... This is a balanced chemical equation but it does not give the following information: (i) The physical state of the reactants and products whether these are solids, liquids or gaseous etc. (ii) Concentration of reactants and products. (iii) Condition of reaction such as temperature, pressure, catalys ...
Electrochemistry
Electrochemistry is the branch of physical chemistry that studies chemical reactions which take place at the interface of an electrode, usually a solid metal or a semiconductor, and an ionic conductor, the electrolyte. These reactions involve electric charges moving between the electrodes and the electrolyte (or ionic species in a solution). Thus electrochemistry deals with the interaction between electrical energy and chemical change.When a chemical reaction is caused by an externally supplied current, as in electrolysis, or if an electric current is produced by a spontaneous chemical reaction as in a battery, it is called an electrochemical reaction. Chemical reactions where electrons are transferred directly between molecules and/or atoms are called oxidation-reduction or (redox) reactions. In general, electrochemistry describes the overall reactions when individual redox reactions are separate but connected by an external electric circuit and an intervening electrolyte.