Word - chemmybear.com
... 8. (Trick #2) When CuSO4(aq) is electrolyzed, you know that Cu° metal is going to form because copper's potential is higher than water. So, positive electrode will attract SO42- ions but SO42- can not further oxidize (full of oxygen and no more unshared pair of electrons possible for further oxidati ...
... 8. (Trick #2) When CuSO4(aq) is electrolyzed, you know that Cu° metal is going to form because copper's potential is higher than water. So, positive electrode will attract SO42- ions but SO42- can not further oxidize (full of oxygen and no more unshared pair of electrons possible for further oxidati ...
Chapter 3 Molecules, Compounds, and Chemical Equations
... protons and electrons. i.) Ionic bonds - result when electrons have been transferred between atoms, resulting in oppositely charged ions that attract each other - generally formed when metal atoms bonded to nonmetal atoms ii.) Covalent bonds – result when two atoms share some of their electrons. – g ...
... protons and electrons. i.) Ionic bonds - result when electrons have been transferred between atoms, resulting in oppositely charged ions that attract each other - generally formed when metal atoms bonded to nonmetal atoms ii.) Covalent bonds – result when two atoms share some of their electrons. – g ...
Chemical Equations PowerPoint
... will require trial and error, the following guidelines may be helpful) a) balance the different types of atoms one at a time b) first, balance the atoms of elements that are combined and that appear only once on each side of the equation ...
... will require trial and error, the following guidelines may be helpful) a) balance the different types of atoms one at a time b) first, balance the atoms of elements that are combined and that appear only once on each side of the equation ...
2014 Exams
... 24. (14 pts) A pale green Al-Ni group unknown was divided into two parts. a. To one part NaOH was added, slowly with constant stirring. A green precipitate formed. Part of the solid re-dissolved with an excess of NaOH. The solution was centrifuged and decanted. The colorless decantate was treated w ...
... 24. (14 pts) A pale green Al-Ni group unknown was divided into two parts. a. To one part NaOH was added, slowly with constant stirring. A green precipitate formed. Part of the solid re-dissolved with an excess of NaOH. The solution was centrifuged and decanted. The colorless decantate was treated w ...
H2 Chemistry Syllabus (9729)
... bonding. The Valence Shell Electron Pair Repulsion (VSEPR) model is used to visualise the threedimensional structure of molecules, which determines the type of interactions possible and also helps to explain the physical and chemical properties. Knowledge of structure and bonding is also important t ...
... bonding. The Valence Shell Electron Pair Repulsion (VSEPR) model is used to visualise the threedimensional structure of molecules, which determines the type of interactions possible and also helps to explain the physical and chemical properties. Knowledge of structure and bonding is also important t ...
WELCOME TO CLASS XII ORIENTATION IN CHEMISTRY SOME
... 473-523k and 35-36 bar pressure as shown in the equation belowAl2O3(s) + 2NaOH(aq) + 3H2O(l)-----2Na[Al(OH)4](aq) Alumina (Al2O3)is removed from the impure ore as sodium ...
... 473-523k and 35-36 bar pressure as shown in the equation belowAl2O3(s) + 2NaOH(aq) + 3H2O(l)-----2Na[Al(OH)4](aq) Alumina (Al2O3)is removed from the impure ore as sodium ...
120CH05 - Louisiana Tech University
... 3 mol H2 (reactant) = 2 mol NH3 (products) produced 1 mol N2 (reactant) = 2 mol NH3 (products) produced 3 x 2 (6) g H2 (reactant) = 1x 28 (28)mol N2 (reactant) consumed 3 x 2 H2 (6) (reactant) = 2x 17 (34) NH3 (products) produced 1 x 28 (28) g N2 (reactant) = 2 x 17 (34) NH3 (products) produced ...
... 3 mol H2 (reactant) = 2 mol NH3 (products) produced 1 mol N2 (reactant) = 2 mol NH3 (products) produced 3 x 2 (6) g H2 (reactant) = 1x 28 (28)mol N2 (reactant) consumed 3 x 2 H2 (6) (reactant) = 2x 17 (34) NH3 (products) produced 1 x 28 (28) g N2 (reactant) = 2 x 17 (34) NH3 (products) produced ...
1999 Advanced Placement Chemistry Exam
... (A) The volume of the gas increases. (B) The pressure of the gas decreases. (C) The average speed of the gas molecules remains the same. (D) The total number of gas molecules remains the same. (E) The average distance between the gas molecules increases. 45. What is the H+(aq) concentration in 0.05 ...
... (A) The volume of the gas increases. (B) The pressure of the gas decreases. (C) The average speed of the gas molecules remains the same. (D) The total number of gas molecules remains the same. (E) The average distance between the gas molecules increases. 45. What is the H+(aq) concentration in 0.05 ...
AP `99 Multiple Choice
... (A) The volume of the gas increases. (B) The pressure of the gas decreases. (C) The average speed of the gas molecules remains the same. (D) The total number of gas molecules remains the same. (E) The average distance between the gas molecules increases. 45. What is the H+(aq) concentration in 0.05 ...
... (A) The volume of the gas increases. (B) The pressure of the gas decreases. (C) The average speed of the gas molecules remains the same. (D) The total number of gas molecules remains the same. (E) The average distance between the gas molecules increases. 45. What is the H+(aq) concentration in 0.05 ...
STOICHIOMETRY:
... "element") and metron (meaning "measure"). Stoichiometry deals with calculations about the masses, volumes or concentrations of reactants and products involved in a chemical reaction. The reason we balance chemical reactions is not just to solve tricky chemistry problems. We understand that it is ne ...
... "element") and metron (meaning "measure"). Stoichiometry deals with calculations about the masses, volumes or concentrations of reactants and products involved in a chemical reaction. The reason we balance chemical reactions is not just to solve tricky chemistry problems. We understand that it is ne ...
Chemistry Olympiad Support Booklet
... Every year the Royal Society of Chemistry (RSC) organises the selection of the UK team for the International Chemistry Olympiad (IChO). The IChO has been running for 40 years, and the UK has been involved since 1983. Next year, in July 2009, the UK will be hosting the competition, and almost 300 stu ...
... Every year the Royal Society of Chemistry (RSC) organises the selection of the UK team for the International Chemistry Olympiad (IChO). The IChO has been running for 40 years, and the UK has been involved since 1983. Next year, in July 2009, the UK will be hosting the competition, and almost 300 stu ...
Experiment # 9 Properties of Oxygen
... the metal-oxygen bonds. If the bonds are strong, a large amount of energy (high temperature) is required to break them. If they are relatively weak then the amount of energy required to break the bonds is smaller, and the temperature at which the compound decomposes is relatively low. ...
... the metal-oxygen bonds. If the bonds are strong, a large amount of energy (high temperature) is required to break them. If they are relatively weak then the amount of energy required to break the bonds is smaller, and the temperature at which the compound decomposes is relatively low. ...
Class XI Physical Chemistry Short note
... Atoms of one element can combine with atoms of other elements to form compounds. 5. A given compound always has the same relative numbers and types of atoms. Atoms are indivisible in chemical processes. That is, atoms are not created or destroyed in chemical reactions. A chemical reaction simply ...
... Atoms of one element can combine with atoms of other elements to form compounds. 5. A given compound always has the same relative numbers and types of atoms. Atoms are indivisible in chemical processes. That is, atoms are not created or destroyed in chemical reactions. A chemical reaction simply ...
2013 - NESACS
... A. Mixtures can be separated by physical processes while compounds cannot. B. Pure water is a compound but salt water is a mixture. C. Mixtures have definite chemical/physical properties, but compounds have variable chemical/physical ...
... A. Mixtures can be separated by physical processes while compounds cannot. B. Pure water is a compound but salt water is a mixture. C. Mixtures have definite chemical/physical properties, but compounds have variable chemical/physical ...
chm 205 - National Open University of Nigeria
... alternate atom in it is Si in place of carbon. In diamond, the strong covalent bonds formed within the giant macromolecule result in a structure which is without any mobile electrons and thus it behaves as an insulator. The rigid, three dimensional linkages make diamond one of the hardest substances ...
... alternate atom in it is Si in place of carbon. In diamond, the strong covalent bonds formed within the giant macromolecule result in a structure which is without any mobile electrons and thus it behaves as an insulator. The rigid, three dimensional linkages make diamond one of the hardest substances ...
CHEMICAL REACTIONS
... ________ 13. The reaction in question 12 is an example of a: a. combination reaction. c. single-replacement reaction. b. decomposition reaction. d. double-replacement reaction. ________ 14. When the equation Fe(s) O2(g) y Fe2O3(s) is balanced, what is the coefficient for Fe2O3? a. 1 c. 3 b. 2 d. 4 ...
... ________ 13. The reaction in question 12 is an example of a: a. combination reaction. c. single-replacement reaction. b. decomposition reaction. d. double-replacement reaction. ________ 14. When the equation Fe(s) O2(g) y Fe2O3(s) is balanced, what is the coefficient for Fe2O3? a. 1 c. 3 b. 2 d. 4 ...
Balancing Redox Equations
... Oxidation Number - The charge that an atom would have if the compound in which it were found were ionic. The rules: 1) The sum of the oxidation numbers of the atoms in a molecule must be equal to the overall charge on the molecule. 2) To assign a number to a transition metal ion (not listed in the t ...
... Oxidation Number - The charge that an atom would have if the compound in which it were found were ionic. The rules: 1) The sum of the oxidation numbers of the atoms in a molecule must be equal to the overall charge on the molecule. 2) To assign a number to a transition metal ion (not listed in the t ...
Electrochemistry Lecture
... Oxidizing agent; That which is responsible to oxidize another. O2 ; Oxidizing agent; The agent itself undergoes reduction ...
... Oxidizing agent; That which is responsible to oxidize another. O2 ; Oxidizing agent; The agent itself undergoes reduction ...
Chemistry - Ysgol Bro Pedr
... We now have to look at what happens within each shell. Shells are actually split into regions of space around the nucleus where there is a high probability of finding an electron of a particular energy. These regions are called orbitals. Shells are split into subshells, which contain orbitals of the ...
... We now have to look at what happens within each shell. Shells are actually split into regions of space around the nucleus where there is a high probability of finding an electron of a particular energy. These regions are called orbitals. Shells are split into subshells, which contain orbitals of the ...
doc: Oxidation Numbers
... Oxidation Numbers It is often useful to follow chemical reactions by looking at changes in the oxidation numbers of the atoms in each compound during the reaction. Oxidation numbers also play an important role in the naming of chemical compounds. By definition, the oxidation number of an atom is the ...
... Oxidation Numbers It is often useful to follow chemical reactions by looking at changes in the oxidation numbers of the atoms in each compound during the reaction. Oxidation numbers also play an important role in the naming of chemical compounds. By definition, the oxidation number of an atom is the ...
Chapter 4 (additional powerpoint)
... • In net ionic form, all spectator ions are dropped. Both the Na+ and Cl- ions are spectator ions because they appear on both sides of the equation. The net ionic equation is: Ba2+(aq) + S2-(aq) ...
... • In net ionic form, all spectator ions are dropped. Both the Na+ and Cl- ions are spectator ions because they appear on both sides of the equation. The net ionic equation is: Ba2+(aq) + S2-(aq) ...
Chapter 2_Application Problems
... another element by a chemical reaction. He knew this because if atoms could change it would change the total mass and violate the Law of Conservation of Mass. ...
... another element by a chemical reaction. He knew this because if atoms could change it would change the total mass and violate the Law of Conservation of Mass. ...