I - Holland Public Schools
... A. Nature of Reactants - deals with collision effectiveness - strong bonds require lots of energy to break, so fewer collisions are effective * covalent bonds are strong - slow reactions many synthesis, decomposition, SR * most reactions with ionic compounds are in aqueous solution, therefore ioni ...
... A. Nature of Reactants - deals with collision effectiveness - strong bonds require lots of energy to break, so fewer collisions are effective * covalent bonds are strong - slow reactions many synthesis, decomposition, SR * most reactions with ionic compounds are in aqueous solution, therefore ioni ...
11-1 SECTION 11 THERMOCHEMISTRY Thermochemistry: Study of
... surroundings. The quantity of energy transferred from the surroundings to the system is given the symbol q. The system means the substance, or reactants and products of a reaction, and the surroundings everything else. When energy is transferred from the system to the surroundings q is negative. Che ...
... surroundings. The quantity of energy transferred from the surroundings to the system is given the symbol q. The system means the substance, or reactants and products of a reaction, and the surroundings everything else. When energy is transferred from the system to the surroundings q is negative. Che ...
Chemistry Definitions
... 11. Aufban’s Principle: Electrons in their ground states occupy orbitals in order of energy levels. The orbital with the lowest energy is always filled first 12. Hund’s Rule of Multiplicity: When filling subshells that contain more than one orbital with the same energy level, each orbital must be si ...
... 11. Aufban’s Principle: Electrons in their ground states occupy orbitals in order of energy levels. The orbital with the lowest energy is always filled first 12. Hund’s Rule of Multiplicity: When filling subshells that contain more than one orbital with the same energy level, each orbital must be si ...
chemical reaction?
... • A catalyst is a substance that changes the rate of a chemical reaction without being used up or changed very much. • Catalysts usually ____________ reaction rate by bringing together reactants • _____________ are an example of a catalyst found in living things ...
... • A catalyst is a substance that changes the rate of a chemical reaction without being used up or changed very much. • Catalysts usually ____________ reaction rate by bringing together reactants • _____________ are an example of a catalyst found in living things ...
Pages from PS 11 Textbook for Lab
... In the application of thermochemistry to a broad range of important calculations we need a convention by which the enthalpy change for a given reaction, called the enthalpy of reaction, ΔHR, can be readily calculated. The convention is to define the standard enthalpy of formation, ΔH°f , to specific ...
... In the application of thermochemistry to a broad range of important calculations we need a convention by which the enthalpy change for a given reaction, called the enthalpy of reaction, ΔHR, can be readily calculated. The convention is to define the standard enthalpy of formation, ΔH°f , to specific ...
1411-Test2 - HCC Learning Web
... F.displacement, or disproportionation reaction: 2A. A piece of copper metal was added to an aqueous solution of silver nitrate, and within a few minutes it was observed that a grey crystalline solid formed on surface of the copper. The solution turned a blue color characteristic of copper(II) ions. ...
... F.displacement, or disproportionation reaction: 2A. A piece of copper metal was added to an aqueous solution of silver nitrate, and within a few minutes it was observed that a grey crystalline solid formed on surface of the copper. The solution turned a blue color characteristic of copper(II) ions. ...
Ch. 3 - Chemical Reactions
... A chemical reaction is a change in which one or more reactants change into one or more products. Bonds are broken and reformed ...
... A chemical reaction is a change in which one or more reactants change into one or more products. Bonds are broken and reformed ...
Answers
... 7) A susbstance is analyzed and determined to be made up of 69.4 % carbon, 4.13 % hydrogen, and 26.4 % oxygen. The molar mass of the substance is found to be 242 g/mol. a) What is the empirical formula for the substance? b) What is the molecular formula for the substance? 8) How many liters of ammon ...
... 7) A susbstance is analyzed and determined to be made up of 69.4 % carbon, 4.13 % hydrogen, and 26.4 % oxygen. The molar mass of the substance is found to be 242 g/mol. a) What is the empirical formula for the substance? b) What is the molecular formula for the substance? 8) How many liters of ammon ...
AP Chem Chapter 16 Review Packet
... assume anything - explain it! Staple your work to this paper. ...
... assume anything - explain it! Staple your work to this paper. ...
PREP Chemistry 2008 Final Exam Review Problems
... b. Solid aluminum metal reacts with aqueous zinc chloride to produce solid zinc metal and aqueous aluminum chloride. c. Aqueous aluminum sulfate reacts with aqueous barium hydroxide to produce aluminum hydroxide and barium sulfate. Use solubility rules to determine states of products. d. Propane (C3 ...
... b. Solid aluminum metal reacts with aqueous zinc chloride to produce solid zinc metal and aqueous aluminum chloride. c. Aqueous aluminum sulfate reacts with aqueous barium hydroxide to produce aluminum hydroxide and barium sulfate. Use solubility rules to determine states of products. d. Propane (C3 ...
CH 11 Chemical Reaction WS #2 (Pre
... 1. What is the Great Barrier Reef and how was it formed? 2. Define chemical reaction3. How is a chemical reaction different from a physical one? Provide examples to support your explanation. 4. Explain how the appearance of the Statue of Liberty is an example of a chemical reaction: 5. What are stal ...
... 1. What is the Great Barrier Reef and how was it formed? 2. Define chemical reaction3. How is a chemical reaction different from a physical one? Provide examples to support your explanation. 4. Explain how the appearance of the Statue of Liberty is an example of a chemical reaction: 5. What are stal ...
Introduction to Computational Chemistry
... —> operator T performs changes of the electron distribution, as expressed through the molecular orbitals φi to compute the correlation energy: ψ = eTφo H eTΨ0 = E eTΨ0 —> single, double…etc substitutions (CCD, CCSD, CCSD(T)…) —> CCSD(T) is most common and probably the best choice as the triple contr ...
... —> operator T performs changes of the electron distribution, as expressed through the molecular orbitals φi to compute the correlation energy: ψ = eTφo H eTΨ0 = E eTΨ0 —> single, double…etc substitutions (CCD, CCSD, CCSD(T)…) —> CCSD(T) is most common and probably the best choice as the triple contr ...
Science 9 Unit 2
... the reaction. E.g. a sugar cube takes longer to dissolve than regular refined sugar Energy – the type of energy used will determine how fast the reaction occurs. E.g. if you use electrical energy from a battery the reaction will be faster ...
... the reaction. E.g. a sugar cube takes longer to dissolve than regular refined sugar Energy – the type of energy used will determine how fast the reaction occurs. E.g. if you use electrical energy from a battery the reaction will be faster ...
CHEMISTRY EXAM 2 REVIEW
... CHEMISTRY EXAM 2 REVIEW Name_____________________________ Per ____ Periodic Table, Physical and Chemical Properties, Changes, and Reactions Guardian Signature: _________________________________________________________________ My child completed this review and studied for at least 30 minutes. Define ...
... CHEMISTRY EXAM 2 REVIEW Name_____________________________ Per ____ Periodic Table, Physical and Chemical Properties, Changes, and Reactions Guardian Signature: _________________________________________________________________ My child completed this review and studied for at least 30 minutes. Define ...
Problem Set 2
... Then indicate: a) The oxidation step: ----------------------------------------------------b) The reduction step: ------------------------------------------------------c) The oxidizing agent: ------------------------------------------------------d) The reducing agent: -------------------------------- ...
... Then indicate: a) The oxidation step: ----------------------------------------------------b) The reduction step: ------------------------------------------------------c) The oxidizing agent: ------------------------------------------------------d) The reducing agent: -------------------------------- ...
Problem Set: Empirical and Molecular Formulas
... 5. A standard laboratory preparation of iodine is the following reaction: NaI + MnO2 + H2SO4 Na2SO4 + MnSO4 + H2O + I2 When 62.55 g of NaI are used with excess amounts of the other reactants, the actual yield of iodine (I2) was 39.78 g. What is the percent yield? ...
... 5. A standard laboratory preparation of iodine is the following reaction: NaI + MnO2 + H2SO4 Na2SO4 + MnSO4 + H2O + I2 When 62.55 g of NaI are used with excess amounts of the other reactants, the actual yield of iodine (I2) was 39.78 g. What is the percent yield? ...
Test Booklet
... A They have the same number of protons. B They will form covalent bonds with oxygen. C They have the same electron configuration as argon. ...
... A They have the same number of protons. B They will form covalent bonds with oxygen. C They have the same electron configuration as argon. ...
Sample Questions
... 3. The average mass of a carbon atom is 12.011. Assuming you were able to pick up only one carbon unit, the chances that you would randomly get one with a mass of 12.011 is 4. Iron is biologically important in the transport of oxygen by red blood cells from the lungs to the various organs of the bod ...
... 3. The average mass of a carbon atom is 12.011. Assuming you were able to pick up only one carbon unit, the chances that you would randomly get one with a mass of 12.011 is 4. Iron is biologically important in the transport of oxygen by red blood cells from the lungs to the various organs of the bod ...
Thermodynamics
... We can determine G for any phase by measuring H and S for the reaction creating the phase from the elements We can then determine G at any T and P mathematically Most accurate if know how V and S vary with P and T • dV/dP is the coefficient of isothermal compressibility • dS/dT is the heat capacit ...
... We can determine G for any phase by measuring H and S for the reaction creating the phase from the elements We can then determine G at any T and P mathematically Most accurate if know how V and S vary with P and T • dV/dP is the coefficient of isothermal compressibility • dS/dT is the heat capacit ...
precipitation rxn_level_packet
... Directions for the following 4 reactions: a. In one well of a well-plate, add three drops of each substance. b. Write down your observations for the reactants above. c. In parenthesis provided above, indicate if the product is soluble with an “aq” or forms a precipitate (solid) with an “s.” 1. Write ...
... Directions for the following 4 reactions: a. In one well of a well-plate, add three drops of each substance. b. Write down your observations for the reactants above. c. In parenthesis provided above, indicate if the product is soluble with an “aq” or forms a precipitate (solid) with an “s.” 1. Write ...
9F Reactivity - Parrs Wood High School
... These substances contain hydrogen and carbon only. They burn in a plentiful supply of air to form carbon dioxide and water: hydrocarbon + oxygen → carbon dioxide + water The test for oxygen is that it relights a glowing splint. An input of energy from a flame or spark is needed to start the combusti ...
... These substances contain hydrogen and carbon only. They burn in a plentiful supply of air to form carbon dioxide and water: hydrocarbon + oxygen → carbon dioxide + water The test for oxygen is that it relights a glowing splint. An input of energy from a flame or spark is needed to start the combusti ...
MCQ plus answers
... An enzyme is a protein that is a highly efficient catalyst for one or more chemical reactions in a living system. ...
... An enzyme is a protein that is a highly efficient catalyst for one or more chemical reactions in a living system. ...
Units of Energy Energy in Thermochemistry Thermochemistry
... – C3H8 (g) + 5O2 (g) 3CO2 (g) + 4H2O (l) ∆Hof C3H8(g): -103.95 kJ/mol; ∆Hof CO2(g): -393.5 kJ/mol; ∆Hof H2O(l): -285.8 kJ/mol • 8750 J of heat are applied to a 170 g sample of metal, causing a 56oC increase in its temperature. What is the specific heat of the metal? Which metal is it? ...
... – C3H8 (g) + 5O2 (g) 3CO2 (g) + 4H2O (l) ∆Hof C3H8(g): -103.95 kJ/mol; ∆Hof CO2(g): -393.5 kJ/mol; ∆Hof H2O(l): -285.8 kJ/mol • 8750 J of heat are applied to a 170 g sample of metal, causing a 56oC increase in its temperature. What is the specific heat of the metal? Which metal is it? ...
Bioorthogonal chemistry
The term bioorthogonal chemistry refers to any chemical reaction that can occur inside of living systems without interfering with native biochemical processes. The term was coined by Carolyn R. Bertozzi in 2003. Since its introduction, the concept of the bioorthogonal reaction has enabled the study of biomolecules such as glycans, proteins, and lipids in real time in living systems without cellular toxicity. A number of chemical ligation strategies have been developed that fulfill the requirements of bioorthogonality, including the 1,3-dipolar cycloaddition between azides and cyclooctynes (also termed copper-free click chemistry), between nitrones and cyclooctynes, oxime/hydrazone formation from aldehydes and ketones, the tetrazine ligation, the isocyanide-based click reaction, and most recently, the quadricyclane ligation.The use of bioorthogonal chemistry typically proceeds in two steps. First, a cellular substrate is modified with a bioorthogonal functional group (chemical reporter) and introduced to the cell; substrates include metabolites, enzyme inhibitors, etc. The chemical reporter must not alter the structure of the substrate dramatically to avoid affecting its bioactivity. Secondly, a probe containing the complementary functional group is introduced to react and label the substrate.Although effective bioorthogonal reactions such as copper-free click chemistry have been developed, development of new reactions continues to generate orthogonal methods for labeling to allow multiple methods of labeling to be used in the same biosystems.