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Physical chemistry

Bob Jones PPT Notes -- Chapter 8a

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Chemistry
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Chemistry
Chemical reactions
Coordination chemistry
Physical chemistry
redox
Soil chemistry
Oxidation number
Polyatomic ion
ion
Chemical bond
Fluorine
Oxide

Chemical Composition &Reactions Oxidation Numbers Keep track of electrons during bonding Tell how many electrons are involved in the bond Tell whether electrons are gained, lost, or unequally shared Oxidation Numbers Help in predicting formulas The more electronegative element gains electrons. The oxidation number of atoms and elements is zero. (free-element) Rule 1 Oxidation Numbers Examples: He ? no bonds O2 ? equal sharing (free-element) Rule 1 Oxidation Numbers The oxidation number of a monatomic ion is equal to the charge of the ion. (ions) Rule 2 Oxidation Numbers Example: Mg loses two electrons, so its charge is +2; therefore, its oxidation number is also +2. (ions) Rule 2 Oxidation Numbers Example: Cl gains one electron, so its charge and oxidation number are ?1. (ions)

CHEM 1A midterm 2 2012

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Chemistry
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Chemistry
Equilibrium chemistry
Bases
Physical chemistry
PH indicators
Acids
Phenolphthalein
Weak base
Acid dissociation constant
Methyl orange
Hydrazoic acid
PH

Chemistry 1A, Fall 2012 Midterm Exam #2 October 17, 2012 (90 min, closed book) Name:__________________________________ SID:___________________________________ GSI Name:________________ Discussion Day/Time: ________________ ? The test consists of 5 short answer questions and 22 multiple choice questions. ? Put your written answers in the boxes provided. Answers outside the boxes may not be considered in grading. ? Write your name on every page of the exam. Question Page Points Score Multiple Choice (1-22) 2-7 88 Titration Short Answer 6 Soda (1) Short Answer 4 Soda (2) Short Answer 4 Ocean Acidification Short Answer 4 Indicators Short Answer 4 Total 110

CHEM 1A midterm 2 key

Subject: 
Chemistry
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Chemistry
Equilibrium chemistry
Bases
PH indicators
Acids
Physical chemistry
Phenolphthalein
Weak base
Methyl orange
Acid dissociation constant
Hydrazoic acid
Carbonate

Chemistry 1A, Fall 2012 Midterm Exam #2 October 17, 2012 (90 min, closed book) Name:_____________KEY____________________ SID:___________________________________ GSI Name:________________ Discussion Day/Time: ________________ ? The test consists of 5 short answer questions and 22 multiple choice questions. ? Put your written answers in the boxes provided. Answers outside the boxes may not be considered in grading. ? Write your name on every page of the exam. Question Page Points Score Multiple Choice (1-22) 2-7 88 Titration Short Answer 6 Soda (1) Short Answer 4 Soda (2) Short Answer 4 Ocean Acidification Short Answer 4 Indicators Short Answer 4 Total 110

Chapter 3/4

Subject: 
Chemistry
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Chemistry
Stoichiometry
Bases
Physical chemistry
Equilibrium chemistry
Chemical reactions
Titration
solubility
Strong electrolyte
Chemical equation
Mole
Limiting reagent

Claire Rafson Chapter 3 notes 3.1 You can count things by weight 3.2 Atomic mass determined on a mass spectrometer Average atomic mass = atomic mass for the element 3.3 Avogadro?s number = 6.02214 X 10^23 1 mole = avogadro?s number 3.4 molar mass= mass in grams of one mole of the compound 3.5 Percent comp of compounds Mass percent- weight percent can be computed by comparing the mass of carbon Find moles of all divide by smallest number find whole number etc. 3.6 Molecular formula= (empirical formula)n N is an integer To find molec formula take molar mass/ empirical formula mass and that is n SEE PAGE 96 IF CONFUSED 3.7- Chemical Reactions- Reactants on left and products on the right. Aq- dissolved in water 3.8- Balance reactions 3.9- Stoichiometry-

AP Bio: Potato Osmosis Lab Report

Subject: 
Biology
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Chemistry
Analytical chemistry
Chemical properties
Sweeteners
Physical chemistry
Solution
Sucrose
Osmosis
Molar concentration
Potato
concentration
Mass
#AP Biology #AP Bio #Biology

As visible from the data presented in the table and graph, the mass change in percent seems to decrease as the sucrose concentration increases. There seems to be minimal percent change of mass between 0.7M and 0.8M. Conclusions/Discussion After carefully recording data, we extrapolated that there is an inverse relationship between sucrose concentration and mass change. The inverse relationship is that as sucrose concentration increases, the mass change will decrease. By the conclusion, it was also concluded that the color-coded solutions had molarities of: Yellow= 0.2M Blue= 0.4M Clear= 0.6 Pink= 0.8M Green= 1M The hypothesis was supported by this conclusion.

AP Chemistry Chapter 6 Outline

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Chemistry
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Chemistry
thermodynamics
Physics
Thermochemistry
State functions
Chemical thermodynamics
Physical chemistry
Standard enthalpy of formation
Exothermic reaction
Calorimeter
Chemical energy
Exothermic
Environment

Daniel Seo 10/10/13 Period 5 Chapter 6 Thermochemistry Outline 6.1 The Nature of Energy 1. Energy ? capacity to do work (or to produce heat) i. Work ? force acting over a distance (moving an object) ii. Heat ? form of energy. ? chemicals may store potential energy in their bonds that can be released as heat energy 2. The law of conservation of mass ? energy can be converted from one form to another, but cannot be created or destroyed ? is also the first law of thermodynamics. i. Potential energy ? energy due to position or composition ii. Kinetic energy ? energy due to the motion of an object ? K? = 1/2mv2 3. Temperature reflects random motion of particles in a substance 4. Temperature indicates the direction in which heat energy will flow

sdsd

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English
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Physics
Introductory physics
State functions
Physical quantities
Density
Physical chemistry
Volume
Kilogram
Mass
Galileo thermometer

Density Lab Kiara Soto West Broward High School Mr.White September 11, 2013 II. What is the density of the cork, crayon and 2 unknown metal samples? III. Density is calculated by mass/volume. It can be found for any object or substance. Mass can be calculated from a triple beam balance and Volume from a graduated cylinder. As a liquid changes from gas, to liquid, to solid, it gains density. (n.d.). Retrieved from http://www.howstuffworks.com/dictionary/chemistry-terms/density-info.htm IV. If we test all the objects, the smallest metal object will be the densest. V. Beaker Cork Crayon Graduated Cylinder 2 Unknown metal samples Triple-Beam Balance VI. Gather all materials Measure the mass of each object

cc

Subject: 
English
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Physics
Introductory physics
State functions
Physical quantities
Density
Physical chemistry
Volume
Kilogram
Mass
Galileo thermometer

Density Lab Kiara Soto West Broward High School Mr.White September 11, 2013 II. What is the density of the cork, crayon and 2 unknown metal samples? III. Density is calculated by mass/volume. It can be found for any object or substance. Mass can be calculated from a triple beam balance and Volume from a graduated cylinder. As a liquid changes from gas, to liquid, to solid, it gains density. (n.d.). Retrieved from http://www.howstuffworks.com/dictionary/chemistry-terms/density-info.htm IV. If we test all the objects, the smallest metal object will be the densest. V. Beaker Cork Crayon Graduated Cylinder 2 Unknown metal samples Triple-Beam Balance VI. Gather all materials Measure the mass of each object

Nomenclature

Subject: 
Chemistry
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Chemistry
Inorganic chemistry
ion
Physical chemistry
Chemical nomenclature
Coordination complex
Nitride
Iodide
IUPAC nomenclature of inorganic chemistry
Metal halides

9/13/12 12:51 PM Nomenclature of binary inorganic compounds (naming) Binary: Cation (+) Anion (-) NaCl Na+ & Cl- MgF2 Mg2+ 2F- Acetic acid HC2H3O2 Iron (III) Chloride FeCl3 Type 1: made up of cations that form only one type of charge NaNa+ AlAl3+ Type 2: the cations form more than one type of charge FeFe2+ or Fe3+ CuCu1+ or Cu2+ Type 3: hydrates: CuSO4 x 6H2 O Type 4: non-metal + non-metal Binary compounds Type 5: Acids *First column of periodic table alkali metals (1+ charge) *2nd column of p.t. alkaline earth metals (2+ charge) *Ag 1+ -- Zn 2+ -- Al 3+ (diagonal line) 1-2-3 Noble gases Stair case on p.t. right of staircase are noble gases/non-metals Chem 109 Nomenclature 9/13/12 12:51 PM Fl, Cl, Br row form 1- 2+Ca|Br21- Oxidation state & Charge

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