AP CHEMISTRY – Source: 1999 AP Exam CHAPTER 8 PRACTICE
... 1. The energy required to convert a ground-state atom in the gas phase to a gaseous positive ion: C 2. The energy change that occurs in the conversion of an ionic solid to widely separated gaseous ions: E 3. The energy in a chemical or physical change that is available to do useful work: B 4. The en ...
... 1. The energy required to convert a ground-state atom in the gas phase to a gaseous positive ion: C 2. The energy change that occurs in the conversion of an ionic solid to widely separated gaseous ions: E 3. The energy in a chemical or physical change that is available to do useful work: B 4. The en ...
Elements (NonMetals)
... Lowest density of any chemical substance Used in blimps in 1930s but flammable Gas at room Temp B.P. –253°C (20K) and M.P.-259°C (14K) Insoluble in water: 2mL gas/ 1L of water Found in H2O, organic and biological molecules Most common element in universe H2 (H-H) isoelectronic with He H has a small ...
... Lowest density of any chemical substance Used in blimps in 1930s but flammable Gas at room Temp B.P. –253°C (20K) and M.P.-259°C (14K) Insoluble in water: 2mL gas/ 1L of water Found in H2O, organic and biological molecules Most common element in universe H2 (H-H) isoelectronic with He H has a small ...
File
... give you the ___________________________ of the atom. 3. _________________ move quickly and constantly around the outside of the nucleus in the ____________ __________. 4. The number of __________________ can change which forms _________________ ( + or -). 5. Atoms of the same element will ALWAYS ha ...
... give you the ___________________________ of the atom. 3. _________________ move quickly and constantly around the outside of the nucleus in the ____________ __________. 4. The number of __________________ can change which forms _________________ ( + or -). 5. Atoms of the same element will ALWAYS ha ...
Practice Toxins Mid-Unit Test 08-09
... ______1. What type of reaction is this? Ag (s) + CuI2 (aq) AgI (s) + Cu(s) (A) single displacement (B) double displacement (C) combination reaction (D) decomposition reaction ______2.Calcium Chloride is abbreviated (A) CaCl (C) Ca2Cl (B) CaCl2 (D) Cl2Ca ______3. What is the molarity of 3.5 moles o ...
... ______1. What type of reaction is this? Ag (s) + CuI2 (aq) AgI (s) + Cu(s) (A) single displacement (B) double displacement (C) combination reaction (D) decomposition reaction ______2.Calcium Chloride is abbreviated (A) CaCl (C) Ca2Cl (B) CaCl2 (D) Cl2Ca ______3. What is the molarity of 3.5 moles o ...
Le Chatelier`s Principle Quiz Answer Key
... 4. The pressure is increased. If the statement is true, write "true"on your answer sheet. If it is false, change the underlined word or words to make the statement true and write the corrected answer on your answer sheet. NH4Cl(s) + heat NH3(g) + HCl(g) 5. The above reaction is exothermic. 6. The ...
... 4. The pressure is increased. If the statement is true, write "true"on your answer sheet. If it is false, change the underlined word or words to make the statement true and write the corrected answer on your answer sheet. NH4Cl(s) + heat NH3(g) + HCl(g) 5. The above reaction is exothermic. 6. The ...
Balance this equation:
... The diagram shows iron oxide, Fe2O3, and carbon monoxide, CO reacting to form iron and carbon dioxide. Which of the following is the correct full balanced chemical equation for the reaction depicted? ...
... The diagram shows iron oxide, Fe2O3, and carbon monoxide, CO reacting to form iron and carbon dioxide. Which of the following is the correct full balanced chemical equation for the reaction depicted? ...
The Born-Haber Cycle
... Consider the strongly exothermic reaction between sodium metal and chlorine gas… ...
... Consider the strongly exothermic reaction between sodium metal and chlorine gas… ...
Chemistry Midterm Review 2006
... 15. A copper penny has a mass of 3.1 g and a volume of .35 cm3. What is the density? 16. A plastic ball has a volume of 19.7 cm3 and a density of .8029 g/cm3. What is the mass? 17. The density of silicon is 2.33 g/cm3. What is the volume if its mass is 62.9g? 18. Convert 157 cg into g. Convert 8.6 ...
... 15. A copper penny has a mass of 3.1 g and a volume of .35 cm3. What is the density? 16. A plastic ball has a volume of 19.7 cm3 and a density of .8029 g/cm3. What is the mass? 17. The density of silicon is 2.33 g/cm3. What is the volume if its mass is 62.9g? 18. Convert 157 cg into g. Convert 8.6 ...
CfE Higher Chemistry Homework 3.5
... To avoid these contaminants, hydrogen sulfide can be made by reacting aluminium sulfide with water. Hydrogen sulfide and aluminium hydroxide are produced. Write a balanced chemical equation for the production of hydrogen sulfide from aluminium sulfide and water. ...
... To avoid these contaminants, hydrogen sulfide can be made by reacting aluminium sulfide with water. Hydrogen sulfide and aluminium hydroxide are produced. Write a balanced chemical equation for the production of hydrogen sulfide from aluminium sulfide and water. ...
objectives chm 1025 - Miami Dade College
... d. Generating the name of binary compounds of a metal and a non-metal or writing their formula when their name is given. e. Generating the name of binary compounds containing only non-metals or writing their formula when their name is given. f. Generating the name of binary acids or pseudo binary ac ...
... d. Generating the name of binary compounds of a metal and a non-metal or writing their formula when their name is given. e. Generating the name of binary compounds containing only non-metals or writing their formula when their name is given. f. Generating the name of binary acids or pseudo binary ac ...
File - IGCSE STUDY BANK
... that stirring the mixture is an important rate factor. If the reacting mixture is not stirred ‘evenly’ then the reactant concentration in solution becomes much less near the solid, which tends to settle out. At the bottom of the flask the reaction prematurely slows down distorting the overall rate m ...
... that stirring the mixture is an important rate factor. If the reacting mixture is not stirred ‘evenly’ then the reactant concentration in solution becomes much less near the solid, which tends to settle out. At the bottom of the flask the reaction prematurely slows down distorting the overall rate m ...
Name______________________ Period________
... 65. According to the law of conservation of mass, the total mass of the reacting substances is a. always more than the total mass of the products. b. always less than the total mass of the products. c. sometimes more and sometimes less than the total mass of the products. d. always equal to the tota ...
... 65. According to the law of conservation of mass, the total mass of the reacting substances is a. always more than the total mass of the products. b. always less than the total mass of the products. c. sometimes more and sometimes less than the total mass of the products. d. always equal to the tota ...
Name ______ Period ______ 7th Grade Science Study Guide 1 7
... 7-5.10 Physical & Chemical Changes 58. Fill in the table with the properties of physical and chemical changes: Change the composition of a substance Only change the physical properties of a substance Form a new substance Physical changes ...
... 7-5.10 Physical & Chemical Changes 58. Fill in the table with the properties of physical and chemical changes: Change the composition of a substance Only change the physical properties of a substance Form a new substance Physical changes ...
A Classification of AP Chemistry Reactions
... Hydrogen gas, H2, is an effective reducing agent for some metal oxides. - Hydrogen gas is passed over hot copper (II) oxide. CuO + H2 Cu + H2O Electron Transfer Reactions The first general type of redox reactions are simple electron-transfer equations. These do not involve oxygen or oxyanions. The ...
... Hydrogen gas, H2, is an effective reducing agent for some metal oxides. - Hydrogen gas is passed over hot copper (II) oxide. CuO + H2 Cu + H2O Electron Transfer Reactions The first general type of redox reactions are simple electron-transfer equations. These do not involve oxygen or oxyanions. The ...
Solution
... about 0.25 g of chloride, which is a little less than half of the mass of the original sample. Therefore, the calculated percent chloride of 47.51 percent is reasonable. ...
... about 0.25 g of chloride, which is a little less than half of the mass of the original sample. Therefore, the calculated percent chloride of 47.51 percent is reasonable. ...
Chapter 7
... • These are negatively charged ions resulting from a gain of electrons. • Nonmetals tend to add or share electrons into their highest occupied energy levels to become anions. This allows them to achieve an octet in their highest occupied energy level. • The charge for an anion is written with a numb ...
... • These are negatively charged ions resulting from a gain of electrons. • Nonmetals tend to add or share electrons into their highest occupied energy levels to become anions. This allows them to achieve an octet in their highest occupied energy level. • The charge for an anion is written with a numb ...
Wizard Test Maker
... 5822 Which element is malleable and can conduct electricity in the solid phase? (1) iodine (3) sulfur (2) phosphorus (4) tin 5747 Which substance can not be decomposed by ordinary chemical means? (1) methane (3) ethanol (4) ammonia (2) mercury 5655 The elements located in the lower left corner of th ...
... 5822 Which element is malleable and can conduct electricity in the solid phase? (1) iodine (3) sulfur (2) phosphorus (4) tin 5747 Which substance can not be decomposed by ordinary chemical means? (1) methane (3) ethanol (4) ammonia (2) mercury 5655 The elements located in the lower left corner of th ...
Advanced Placement Chemistry
... energy. (A) Activation energy (B) Free energy (C) Ionization energy (D) Kinetic energy (E) Lattice energy 1. The energy required to convert a groundstate atom in the gas phase to a gaseous positive ion 2. The energy change that occurs in the conversion of an ionic solid to widely separated gaseous i ...
... energy. (A) Activation energy (B) Free energy (C) Ionization energy (D) Kinetic energy (E) Lattice energy 1. The energy required to convert a groundstate atom in the gas phase to a gaseous positive ion 2. The energy change that occurs in the conversion of an ionic solid to widely separated gaseous i ...
AP Chemistry Summer Assignment 2016 revised
... 51.Write a balanced equation for the following: a.Reaction of boron trifluoride gas with water to give liquid hydrogen fluoride and solid boric ...
... 51.Write a balanced equation for the following: a.Reaction of boron trifluoride gas with water to give liquid hydrogen fluoride and solid boric ...
September 9th Electric Potential – Chapter 25
... When electrostatic force acts between charged particles assign an electric potential energy, U ...
... When electrostatic force acts between charged particles assign an electric potential energy, U ...
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.