powerpoint
... exchange of atoms or ions between two compounds Happens in aqueous solutions Must end up with a solid precipitate, gas, or molecular compound (like water) ...
... exchange of atoms or ions between two compounds Happens in aqueous solutions Must end up with a solid precipitate, gas, or molecular compound (like water) ...
CH. 15 Notes
... Chemical ReactionsThe process by which 1 or more substances undergo change to produce 1 or more different substances Reactions occur when chemical bonds are broken. The atoms rearranged and form new bonds ...
... Chemical ReactionsThe process by which 1 or more substances undergo change to produce 1 or more different substances Reactions occur when chemical bonds are broken. The atoms rearranged and form new bonds ...
Chapter 4 - Colby College Wiki
... bleaching wood pulp and fabrics and substituting for chlorine in water purification. One reason for its versatility is that it can be either an oxidizing or a reducing agent. ...
... bleaching wood pulp and fabrics and substituting for chlorine in water purification. One reason for its versatility is that it can be either an oxidizing or a reducing agent. ...
Practice Exam 3
... the BUBBLE SHEET provided. Marks on this exam paper will NOT be graded, even if a mark here appears correct and the answer on the bubble sheet is incorrect. ...
... the BUBBLE SHEET provided. Marks on this exam paper will NOT be graded, even if a mark here appears correct and the answer on the bubble sheet is incorrect. ...
Chemical Reactions
... 3. THINK VISUALLY The graphs below show the amount of energy present during two chemical reactions. One of the reactions is an energy-absorbing reaction, the other is an energy-releasing reaction. Label the type of reaction for each, label the energy level for the reactants and products, then draw a ...
... 3. THINK VISUALLY The graphs below show the amount of energy present during two chemical reactions. One of the reactions is an energy-absorbing reaction, the other is an energy-releasing reaction. Label the type of reaction for each, label the energy level for the reactants and products, then draw a ...
CAMBRIDGE INTERNATIONAL EXAMINATIONS
... 15 Rubidium is above sodium in the reactivity series. What is formed when concentrated aqueous rubidium chloride is electrolysed? ...
... 15 Rubidium is above sodium in the reactivity series. What is formed when concentrated aqueous rubidium chloride is electrolysed? ...
CHEM121 Exam 4 ObjectivesW16
... Identify exothermic & endothermic reactions Draw or interpret “energy diagrams” for exothermic & endothermic reactions Know factors that affect reaction rate Write equilibrium constant expressions Calculate equilibrium constants (given concentrations of reactants/products) Interpret equilibrium cons ...
... Identify exothermic & endothermic reactions Draw or interpret “energy diagrams” for exothermic & endothermic reactions Know factors that affect reaction rate Write equilibrium constant expressions Calculate equilibrium constants (given concentrations of reactants/products) Interpret equilibrium cons ...
Acid Spill - Rosshall Academy
... C. An acid that has been neutralised by an alkali D. An acid with the hydrogen ions replaced by ammonium ions 17 The salts formed by nitric acid are called A. chlorides B. ethanoates C. nitrates D. sulphates 18 In the reaction between nitric acid and zinc oxide, one of the products is zinc nitrate, ...
... C. An acid that has been neutralised by an alkali D. An acid with the hydrogen ions replaced by ammonium ions 17 The salts formed by nitric acid are called A. chlorides B. ethanoates C. nitrates D. sulphates 18 In the reaction between nitric acid and zinc oxide, one of the products is zinc nitrate, ...
Instructions for AP/IB 2 Chem Summer Assignment Note
... Ex: aqueous solutions of silver nitrate and sodium carbonate are mixed. Ag+ + NO3- + Na+ + CO32- → Ag2CO3 + Na+ + NO3- ...
... Ex: aqueous solutions of silver nitrate and sodium carbonate are mixed. Ag+ + NO3- + Na+ + CO32- → Ag2CO3 + Na+ + NO3- ...
Chapter 11 Chemical Reactions
... 3) Balance the elements one at a time by adding coefficients (the numbers in front) where you need more - save balancing the H and O until LAST! ...
... 3) Balance the elements one at a time by adding coefficients (the numbers in front) where you need more - save balancing the H and O until LAST! ...
Redox Reactions - Hillsborough County Public Schools
... Examples: When calculating the oxidation number of N in NO2 , use the rules above to help you. You see that oxygen normally has an oxidation number of -2 and there are two oxygen atoms. 2(-2) = -4. The total number of negative charges is 4 negatives. The only other atom that is present is nitrogen. ...
... Examples: When calculating the oxidation number of N in NO2 , use the rules above to help you. You see that oxygen normally has an oxidation number of -2 and there are two oxygen atoms. 2(-2) = -4. The total number of negative charges is 4 negatives. The only other atom that is present is nitrogen. ...
AQA_GCSE_Chemistry_Higher_Unit_2_Notes
... The atoms may be the same (e.g. O2) or different (e.g. H2O). The chemical formula shows the number and type of atoms present. Non-metal compounds are made of molecules: Carbon dioxide contains CO2 molecules Methane (natural gas) contains CH4 molecules AN ION is an atom or group of atoms with an elec ...
... The atoms may be the same (e.g. O2) or different (e.g. H2O). The chemical formula shows the number and type of atoms present. Non-metal compounds are made of molecules: Carbon dioxide contains CO2 molecules Methane (natural gas) contains CH4 molecules AN ION is an atom or group of atoms with an elec ...
Unit - II Electrochemistry
... Electrochemical or Wet corrosion It occurs in the presence ofmoisture or It occurs in dry condition electrolyte. It involves the direct chemical It involves the setting up of large number of attack of metalsby dry gases. electrochemical cells. Corrosion products accumulatein Corrosion occurs at the ...
... Electrochemical or Wet corrosion It occurs in the presence ofmoisture or It occurs in dry condition electrolyte. It involves the direct chemical It involves the setting up of large number of attack of metalsby dry gases. electrochemical cells. Corrosion products accumulatein Corrosion occurs at the ...
Balancing Reaction Equations Oxidation State Reduction
... Reduction: MnO4- + 4H+ +3e- = MnO2 + 2H2O remove H+ by adding OH- to each side * 4 (4H+ + 4OH- = 4 H2O) MnO4- + 4 H2O+ +3e- = MnO2 + 2H2O + 4OHsimplify: MnO4- + 2 H2O +3e- = MnO2 + 4OH- B combine so electrons balance: A * 3 + B * 2 6I-+ 2MnO4- + 4H2O = 3I2 + 2MnO2 + 8OH- ...
... Reduction: MnO4- + 4H+ +3e- = MnO2 + 2H2O remove H+ by adding OH- to each side * 4 (4H+ + 4OH- = 4 H2O) MnO4- + 4 H2O+ +3e- = MnO2 + 2H2O + 4OHsimplify: MnO4- + 2 H2O +3e- = MnO2 + 4OH- B combine so electrons balance: A * 3 + B * 2 6I-+ 2MnO4- + 4H2O = 3I2 + 2MnO2 + 8OH- ...
Chapter 11 Chemical Reactions
... 3) Balance the elements one at a time by adding coefficients (the numbers in front) where you need more - save balancing the H and O until LAST! ...
... 3) Balance the elements one at a time by adding coefficients (the numbers in front) where you need more - save balancing the H and O until LAST! ...
Hydrogen Production by Splitting Water in an Electrolyzer
... of photo electrolysis where solar cells are used to generate voltage across the electrodes of an electrolyzer, seems to be an ideal candidate which can be integrated with fuel cell technology to serve future power needs. It certainly seems profitable to generate hydrogen from pure water with photo e ...
... of photo electrolysis where solar cells are used to generate voltage across the electrodes of an electrolyzer, seems to be an ideal candidate which can be integrated with fuel cell technology to serve future power needs. It certainly seems profitable to generate hydrogen from pure water with photo e ...
+ H 2 O(l) - Cloudfront.net
... HCl (aq) + NaOH (aq) NaCl (aq) + H2O (l) NH4Cl (aq) + NaOH (aq) NH3 (g) + H2O (l) + NaCl (aq) Blue color for the products represents the driving force which allows the chemical reaction to occur. ...
... HCl (aq) + NaOH (aq) NaCl (aq) + H2O (l) NH4Cl (aq) + NaOH (aq) NH3 (g) + H2O (l) + NaCl (aq) Blue color for the products represents the driving force which allows the chemical reaction to occur. ...
Single-Replacement Reactions
... Count the number of atoms of each type of element appearing on both sides Balance the atoms of an element one at a time by adding coefficients (the numbers in front) - save H and O until LAST! Check to make sure it is balanced. ...
... Count the number of atoms of each type of element appearing on both sides Balance the atoms of an element one at a time by adding coefficients (the numbers in front) - save H and O until LAST! Check to make sure it is balanced. ...
PDF
... CHEMICAL EQUATIONS • Chemical equations are a convenient way to represent chemical reactions. Chemical equations are written in terms of reactants and products. • A symbol is written in parentheses to the right of each reactant and product to indicate the state or form in which the substance exists. ...
... CHEMICAL EQUATIONS • Chemical equations are a convenient way to represent chemical reactions. Chemical equations are written in terms of reactants and products. • A symbol is written in parentheses to the right of each reactant and product to indicate the state or form in which the substance exists. ...
Regents questions
... Sample 7.1 Natural gas used in home heating and cooking is odorless. Because natural gas leaks pose the danger of explosion or suffocation, various smelly substances are added to the gas to allow detection of a leak. One such substance is methyl mercaptan, CH3SH. Use Figure 7.6 to predict the lengt ...
... Sample 7.1 Natural gas used in home heating and cooking is odorless. Because natural gas leaks pose the danger of explosion or suffocation, various smelly substances are added to the gas to allow detection of a leak. One such substance is methyl mercaptan, CH3SH. Use Figure 7.6 to predict the lengt ...
final exam review packet
... 58. Fill in the word that best describes the property of gases A. Gases experience _________________ meaning they mix evenly and completely. B. Gases take the ________________ and _________________ of their container. C. Gases exert __________________ . D. Gases have ___________________ that shows w ...
... 58. Fill in the word that best describes the property of gases A. Gases experience _________________ meaning they mix evenly and completely. B. Gases take the ________________ and _________________ of their container. C. Gases exert __________________ . D. Gases have ___________________ that shows w ...
PPT
... • The amount of product calculated in the last three examples are not the amounts that would be produced if the reactions were actually done in the laboratory. In each case, less product would be obtained than was calculated. There are numerous causes. Some materials are lost during transfers from o ...
... • The amount of product calculated in the last three examples are not the amounts that would be produced if the reactions were actually done in the laboratory. In each case, less product would be obtained than was calculated. There are numerous causes. Some materials are lost during transfers from o ...
Exam 2
... • Detach the data sheet from the centre of this book during reading time. • Write your student number in the space provided above on this page. • Check that your name and student number as printed on your answer sheet for multiple-choice questions are correct, and sign your name in the space provide ...
... • Detach the data sheet from the centre of this book during reading time. • Write your student number in the space provided above on this page. • Check that your name and student number as printed on your answer sheet for multiple-choice questions are correct, and sign your name in the space provide ...
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.