Unit 2.2 Test Review Key
... kool-aid in water. It is an expected color change. It is a chemical change only when it is unexpected- for example mixing two clear liquids and having the substance turn blue. ...
... kool-aid in water. It is an expected color change. It is a chemical change only when it is unexpected- for example mixing two clear liquids and having the substance turn blue. ...
Exploring the Science of Electricity
... move from one side to the other side. The electrons move through the conductors and provide electrical energy to power the circuit load(s). –Solar energy is used to power to such things as calculators and electric fence controllers. ...
... move from one side to the other side. The electrons move through the conductors and provide electrical energy to power the circuit load(s). –Solar energy is used to power to such things as calculators and electric fence controllers. ...
CP Chemistry Final Review – Chap. 10-19
... 3. Describe what was measured in Boyle’s experiment and Charles’ experiment. 4. State and describe Dalton’s law of partial pressure. 5. List the postulate of the kinetic molecular theory. Chapter 15 – Solutions ...
... 3. Describe what was measured in Boyle’s experiment and Charles’ experiment. 4. State and describe Dalton’s law of partial pressure. 5. List the postulate of the kinetic molecular theory. Chapter 15 – Solutions ...
Net Ionic Prep Session NMSI INSTRUCTOR
... part (ii). In part (i), coefficients should be in terms of lowest whole numbers. Assume that solutions are aqueous unless otherwise indicated. Represent substances in solutions as ions if the substances are extensively ionized. Omit formulas for any ions or molecules that are unchanged by the reacti ...
... part (ii). In part (i), coefficients should be in terms of lowest whole numbers. Assume that solutions are aqueous unless otherwise indicated. Represent substances in solutions as ions if the substances are extensively ionized. Omit formulas for any ions or molecules that are unchanged by the reacti ...
Recitation #5c
... The ELECTRIC POTENTIAL DIFFERENCE, V, is the difference in ELECTRIC POTENTIAL between two points. V = Vf – Vi. f The potential difference between any points can be found using the electric field: V f Vi E.ds i ...
... The ELECTRIC POTENTIAL DIFFERENCE, V, is the difference in ELECTRIC POTENTIAL between two points. V = Vf – Vi. f The potential difference between any points can be found using the electric field: V f Vi E.ds i ...
6CH02 - MPPE
... Answer ALL the questions. Write your answers in the spaces provided. 17 This question is about the element chlorine and its compounds. (a) When chlorine is bubbled through water, a solution of chlorine water forms. What is the colour of chlorine water? ...
... Answer ALL the questions. Write your answers in the spaces provided. 17 This question is about the element chlorine and its compounds. (a) When chlorine is bubbled through water, a solution of chlorine water forms. What is the colour of chlorine water? ...
The Photoelectric effect - University of Toronto Physics
... explanations of the effect. In a series of measurements they will differentiate between the two theoretical explanations and determine which best agrees with their observations. ...
... explanations of the effect. In a series of measurements they will differentiate between the two theoretical explanations and determine which best agrees with their observations. ...
A Review of High School Chemistry
... now manipulate all manner of unit factors to solve problems involving amounts of chemical materials, and while there was some modest requirement that you understand the nature of the substances involved in the problems, you might just as well have applied the techniques you learned to solve problems ...
... now manipulate all manner of unit factors to solve problems involving amounts of chemical materials, and while there was some modest requirement that you understand the nature of the substances involved in the problems, you might just as well have applied the techniques you learned to solve problems ...
Penny Sandwiches - Terrific Science
... Step 1 Using the file or coarse sandpaper, completely remove the copper coating from the edge of both pennies. Pour the lemon juice into one container. Position one penny in the container so that it is standing on its edge against the side of the container. Pour the vinegar into the second container ...
... Step 1 Using the file or coarse sandpaper, completely remove the copper coating from the edge of both pennies. Pour the lemon juice into one container. Position one penny in the container so that it is standing on its edge against the side of the container. Pour the vinegar into the second container ...
AP Chemistry: Aqueous Reactions and Solution Stoichiometry
... 2In this reaction the neutral O2 has gained electrons from the Ca to become O in CaO. 2We say O2 has been reduced to O . In all reduction-oxidation (redox) reactions, one species is reduced at the same time as another is oxidized. Oxidation Numbers Electrons are not explicitly shown in chemical equa ...
... 2In this reaction the neutral O2 has gained electrons from the Ca to become O in CaO. 2We say O2 has been reduced to O . In all reduction-oxidation (redox) reactions, one species is reduced at the same time as another is oxidized. Oxidation Numbers Electrons are not explicitly shown in chemical equa ...
chemistry important question i
... (i) Ozone is thermodynamically unstable. (ii) Solid PCl5 is ionic in nature. (iii) Fluorine forms only one oxoacid HOF. (b) Draw the structure of (i) BrF5 (ii) XeF4 16. (i) Compare the oxidizing action of F2 and Cl2 by considering parameters such as bond dissociation enthalpy, electron gain enthalpy ...
... (i) Ozone is thermodynamically unstable. (ii) Solid PCl5 is ionic in nature. (iii) Fluorine forms only one oxoacid HOF. (b) Draw the structure of (i) BrF5 (ii) XeF4 16. (i) Compare the oxidizing action of F2 and Cl2 by considering parameters such as bond dissociation enthalpy, electron gain enthalpy ...
Unit #7 Take Home Test
... water in the hydrated compound CaSO4•2H2O has an accepted value of 20.9%. A student did an experiment and determined that the percent composition by water in CaSO4•2H2O was 21.4%. Calculate the percent error of the student’s experimental result. Your response must include both a correct numerical se ...
... water in the hydrated compound CaSO4•2H2O has an accepted value of 20.9%. A student did an experiment and determined that the percent composition by water in CaSO4•2H2O was 21.4%. Calculate the percent error of the student’s experimental result. Your response must include both a correct numerical se ...
Chemistry 1st Semester Practice Exam
... In a particular experiment, the percent yield is 79.0%. This means that a 7.90-g sample of fluorine yields __________ g of SF6 in the presence of excess sulfur. ...
... In a particular experiment, the percent yield is 79.0%. This means that a 7.90-g sample of fluorine yields __________ g of SF6 in the presence of excess sulfur. ...
Preview Sample 1
... D) are always some form of carbohydrate. E) are naturally similar to sugars. 102) Alaska Natives have a lower incidence of heart disease even though their diets are high in fat and cholesterol. This may be due to the large amount of ________ in their diets. A) steroids B) omega-3 fatty acids C) trig ...
... D) are always some form of carbohydrate. E) are naturally similar to sugars. 102) Alaska Natives have a lower incidence of heart disease even though their diets are high in fat and cholesterol. This may be due to the large amount of ________ in their diets. A) steroids B) omega-3 fatty acids C) trig ...
AP Chemistry Syllabus 2013 Mawhiney
... II. Galvanic cells and cell potentials A. Standard Half-Cell Potentials B. Concentration Cells C. Free Energy and spontaneity III. Electrolytic cells A. Electrolysis (molten and aqueous salts) B. Corrosion C. Electroplating and stoichiometric calculations The student will: 1. Use the half-reaction m ...
... II. Galvanic cells and cell potentials A. Standard Half-Cell Potentials B. Concentration Cells C. Free Energy and spontaneity III. Electrolytic cells A. Electrolysis (molten and aqueous salts) B. Corrosion C. Electroplating and stoichiometric calculations The student will: 1. Use the half-reaction m ...
Chemical Reactions and Stoichiometry
... a. Evolution of heat and light (simultaneously) b. Production of a gas (bubbles, odor change) c. Formation of a precipitate (solid, cloudy) d. Color change (not introduced by an outside source such as dye or ink) Characteristics of a Chemical Reaction – the atoms in one or more reactant rearrange wh ...
... a. Evolution of heat and light (simultaneously) b. Production of a gas (bubbles, odor change) c. Formation of a precipitate (solid, cloudy) d. Color change (not introduced by an outside source such as dye or ink) Characteristics of a Chemical Reaction – the atoms in one or more reactant rearrange wh ...
Free response review
... Topic 16 Acid – base equilibria Free Response Practice 1. Sulfurous acid, H2SO3 is a diprotic acid. Ka1 = 1.7 e-2. Ka2 = 6.4 e-8. a. Write an ionic equation for the aqueous ionization that corresponds to Ka1. Write an ionic equation for the aqueous ionization that corresponds to Ka2. Identify the c ...
... Topic 16 Acid – base equilibria Free Response Practice 1. Sulfurous acid, H2SO3 is a diprotic acid. Ka1 = 1.7 e-2. Ka2 = 6.4 e-8. a. Write an ionic equation for the aqueous ionization that corresponds to Ka1. Write an ionic equation for the aqueous ionization that corresponds to Ka2. Identify the c ...
Worksheet
... cannot replace elements higher on the chart. For example, as we saw above in our two examples, chlorine, Cl, can replace bromine, Br, and aluminum, Al, can replace iron, Fe. Look at your charts. Note that on the Anion Activity Series, chlorine is higher than bromine. Note on the Cation Activity Seri ...
... cannot replace elements higher on the chart. For example, as we saw above in our two examples, chlorine, Cl, can replace bromine, Br, and aluminum, Al, can replace iron, Fe. Look at your charts. Note that on the Anion Activity Series, chlorine is higher than bromine. Note on the Cation Activity Seri ...
Chemistry COS 2011-2012
... Heat released or absorbed in chemical reactions is proportional to the amounts of reactants consumed. When a reversible process occurs, the same amount of energy is involved no matter which way the reaction proceeds. The difference will be if the energy is released or absorbed. ...
... Heat released or absorbed in chemical reactions is proportional to the amounts of reactants consumed. When a reversible process occurs, the same amount of energy is involved no matter which way the reaction proceeds. The difference will be if the energy is released or absorbed. ...
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.