National 5 Unit 1 Homework Booklet
... (c) Name the two pollutant gases changed by the catalyst and describe what they are changed into. 4. Explain why solid citric acid does not conduct electricity yet when it dissolves in water it does conduct. 5. Electrolysis of acids can be used to confirm the presence of hydrogen ions. (a) At which ...
... (c) Name the two pollutant gases changed by the catalyst and describe what they are changed into. 4. Explain why solid citric acid does not conduct electricity yet when it dissolves in water it does conduct. 5. Electrolysis of acids can be used to confirm the presence of hydrogen ions. (a) At which ...
Homework Booklet Unit 1 Feb14
... (c) Name the two pollutant gases changed by the catalyst and describe what they are changed into. 4. Explain why solid citric acid does not conduct electricity yet when it dissolves in water it does conduct. 5. Electrolysis of acids can be used to confirm the presence of hydrogen ions. (a) At which ...
... (c) Name the two pollutant gases changed by the catalyst and describe what they are changed into. 4. Explain why solid citric acid does not conduct electricity yet when it dissolves in water it does conduct. 5. Electrolysis of acids can be used to confirm the presence of hydrogen ions. (a) At which ...
AP Chemistry Summer Assignment 2016
... Predict whether the following combinations will result in a reaction. Write a balanced reaction for those reactions. Indicate you understand the specific reactions by writing the net ionic equation for the reaction. Hopefully you would have memorized the solubility rules before attempting to answer ...
... Predict whether the following combinations will result in a reaction. Write a balanced reaction for those reactions. Indicate you understand the specific reactions by writing the net ionic equation for the reaction. Hopefully you would have memorized the solubility rules before attempting to answer ...
practice final examination
... 10. Answer true or false for each of the following questions below (circle your choice): a) ...
... 10. Answer true or false for each of the following questions below (circle your choice): a) ...
the nakuru district sec. schools trial examinations - 2015
... 14 Red-hot iron reacts with steam to give tri-iron tetroxide and hydrogen gas. The reaction is reversible 3Fe(s) + 4H2O(s) Fe304(s) + 4H2(g) (a) Define dynamic equilibrium (1 mark) Although the reaction appears to have stopped by attaining a state of balance, both forward and backward reactions ar ...
... 14 Red-hot iron reacts with steam to give tri-iron tetroxide and hydrogen gas. The reaction is reversible 3Fe(s) + 4H2O(s) Fe304(s) + 4H2(g) (a) Define dynamic equilibrium (1 mark) Although the reaction appears to have stopped by attaining a state of balance, both forward and backward reactions ar ...
Chapter 20 – The Representative Elements
... run-off results in “algal blooms” that leads to condition known as eutrophication. That is, the deplication of water oxygen content that causes suffocation to fish and other aquatic lives. Nitrogen and oxygen in the atmosphere do not react under normal condition. At temperature such as that inside a ...
... run-off results in “algal blooms” that leads to condition known as eutrophication. That is, the deplication of water oxygen content that causes suffocation to fish and other aquatic lives. Nitrogen and oxygen in the atmosphere do not react under normal condition. At temperature such as that inside a ...
www.XtremePapers.com
... There are forty questions on this paper. Answer all questions. For each question there are four possible answers A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet. Read the instructions on the Answer Sheet very carefully. Each corre ...
... There are forty questions on this paper. Answer all questions. For each question there are four possible answers A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet. Read the instructions on the Answer Sheet very carefully. Each corre ...
Review of Moles and Stoichiometry
... 21.) Methanol (CH3OH), also called methyl alcohol, is the simplest alcohol. It is used a as fuel in race cars and is a potential replacement for gasoline. Suppose 68.5 kg CO (g) is reacted with 8.60 kg H2 (g). This reaction is: ...
... 21.) Methanol (CH3OH), also called methyl alcohol, is the simplest alcohol. It is used a as fuel in race cars and is a potential replacement for gasoline. Suppose 68.5 kg CO (g) is reacted with 8.60 kg H2 (g). This reaction is: ...
Lab 1-1 - My eCoach
... these changes, such as color changes, the formation of a solid (precipitation), or the formation of gas bubbles (effervescence), are visible. Thus, though we cannot see the atoms and molecules reacting, we can see indications that chemical changes have taken place. Different atoms and molecules ofte ...
... these changes, such as color changes, the formation of a solid (precipitation), or the formation of gas bubbles (effervescence), are visible. Thus, though we cannot see the atoms and molecules reacting, we can see indications that chemical changes have taken place. Different atoms and molecules ofte ...
Teacher Demo/Student Activity: Elephant`s Toothpaste
... 6 % hydrogen peroxide solution is available from most beauty supply stores. This demonstration results in a great deal of foam. Ensure that you perform the experiment in a pan to aid with the clean up. Any of the other suggested catalysts (manganese(IV) oxide, potassium iodide, and sodium iodide) al ...
... 6 % hydrogen peroxide solution is available from most beauty supply stores. This demonstration results in a great deal of foam. Ensure that you perform the experiment in a pan to aid with the clean up. Any of the other suggested catalysts (manganese(IV) oxide, potassium iodide, and sodium iodide) al ...
AP Chemistry
... I have taught AP Chemistry for 10 years and am very excited about next year. AP Chemistry is designed to prepare you to be successful in college chemistry as well as to pass the AP Chemistry test. Attached is the summer work placket to prepare you. Expect a test on this material the second day of sc ...
... I have taught AP Chemistry for 10 years and am very excited about next year. AP Chemistry is designed to prepare you to be successful in college chemistry as well as to pass the AP Chemistry test. Attached is the summer work placket to prepare you. Expect a test on this material the second day of sc ...
Stoichiometry
... Energy is given off in combustion reactions. For organic compounds, water and carbon dioxide are usual byproducts. Ex. Metabolism of food, fuel combustion: Sucrose (C22H12O11) combusts Combustion of propane Combustion of hydrogen ...
... Energy is given off in combustion reactions. For organic compounds, water and carbon dioxide are usual byproducts. Ex. Metabolism of food, fuel combustion: Sucrose (C22H12O11) combusts Combustion of propane Combustion of hydrogen ...
Chemistry Midterm Review 2006
... b) Air has a total pressure of 20.6 atm and contains carbon monoxide, oxygen, and nitrogen. If air is made up of 0.6 atm of carbon monoxide, 12.6 atm of oxygen, what would be the partial pressure of nitrogen? c) If a sample of gas occupies 15.9 L at 34 C, what will its volume be at 27 C if the press ...
... b) Air has a total pressure of 20.6 atm and contains carbon monoxide, oxygen, and nitrogen. If air is made up of 0.6 atm of carbon monoxide, 12.6 atm of oxygen, what would be the partial pressure of nitrogen? c) If a sample of gas occupies 15.9 L at 34 C, what will its volume be at 27 C if the press ...
unit 7 – writing and balancing chemical equations
... There are four physical state symbols which are used as subscripts immediately following substances whose physical states are known or given. (s) – solid, which is used for solids or precipitates () – liquid, which is used only for “true” liquids such as elements which are liquids at room temperatu ...
... There are four physical state symbols which are used as subscripts immediately following substances whose physical states are known or given. (s) – solid, which is used for solids or precipitates () – liquid, which is used only for “true” liquids such as elements which are liquids at room temperatu ...
CHM1 Exam 16 Name 2222222222222222222222222222 Multiple
... 17. How many grams of NaCl (molar mass = 58.5 g/mole) must be dissolved in 200. mL of an aqueous solution to prepare a 0.100 M solution? (1) 58.5 g (2) 1170 g ...
... 17. How many grams of NaCl (molar mass = 58.5 g/mole) must be dissolved in 200. mL of an aqueous solution to prepare a 0.100 M solution? (1) 58.5 g (2) 1170 g ...
summer learning G10
... 3. Balance the following equations. https://youtu.be/VlPHpUE_14s youtu.be/AoK2BWqQDmQ a. ...
... 3. Balance the following equations. https://youtu.be/VlPHpUE_14s youtu.be/AoK2BWqQDmQ a. ...
Introductory Chemistry: A Foundation FOURTH EDITION by Steven
... with oxygen gas to produce gaseous nitrogen monoxide and gaseous water 10. Repeat – A trick of the trade, when you are forced to attack an element that is in 3 or more compounds – find where it is uncombined. You can find a factor to make it any amount you want, even if that factor is a fraction! – ...
... with oxygen gas to produce gaseous nitrogen monoxide and gaseous water 10. Repeat – A trick of the trade, when you are forced to attack an element that is in 3 or more compounds – find where it is uncombined. You can find a factor to make it any amount you want, even if that factor is a fraction! – ...
Chemistry Midterm Review 2006
... Example: a) Al + N2 → b) Li2CO3 c) H2O → d) K + HCl → e) Cl2 + NaBr → f) CaS + FeCl2 → g) CH4 + O2 h) SO3 + H2O → i) Mg(ClO3)2 j) Mg + H2O(l) 6. What is an activity series chart? What type of reaction do you use it for? a) Using the activity chart, why can sodium replace hydrogen? 7. What ar ...
... Example: a) Al + N2 → b) Li2CO3 c) H2O → d) K + HCl → e) Cl2 + NaBr → f) CaS + FeCl2 → g) CH4 + O2 h) SO3 + H2O → i) Mg(ClO3)2 j) Mg + H2O(l) 6. What is an activity series chart? What type of reaction do you use it for? a) Using the activity chart, why can sodium replace hydrogen? 7. What ar ...
AP CHEMISTRY SUMMER 2016
... 60. A 2.0g sample of SX6 (g) has a volume of 329.5 cm3 at 1.00 atm and 20oC. Identify the element ‘X’. Name the compound. ...
... 60. A 2.0g sample of SX6 (g) has a volume of 329.5 cm3 at 1.00 atm and 20oC. Identify the element ‘X’. Name the compound. ...
AS Paper 1 Practice Paper 4 - A
... A vinegar solution was obtained from a leading supplier. The label gave the concentration of ethanoic acid as 56.1 gdm-3. A student was asked to check the concentration of the acid using standard sodium hydroxide solution. The student decided to use a measuring cylinder to obtain 25.0 cm3 of the sup ...
... A vinegar solution was obtained from a leading supplier. The label gave the concentration of ethanoic acid as 56.1 gdm-3. A student was asked to check the concentration of the acid using standard sodium hydroxide solution. The student decided to use a measuring cylinder to obtain 25.0 cm3 of the sup ...
CHEMISTRY-1 CHAPTER 8 CHEMICAL REACTIONS
... Don’t forget about the diatomic elements! (BrINClHOF) For example, Oxygen is O2 as an element. In a compound, it can’t be a diatomic element because it’s not an element anymore, it’s a compound! ...
... Don’t forget about the diatomic elements! (BrINClHOF) For example, Oxygen is O2 as an element. In a compound, it can’t be a diatomic element because it’s not an element anymore, it’s a compound! ...
Household Items That May Contain Mercury
... Hazardous materials are a pervasive part of the world in which we live, and incidents involving such materials are inevitable. Those persons in manufacturing, using, and transporting hazardous materials are trained to safely undertake initial protective actions when an unplanned release occurs and t ...
... Hazardous materials are a pervasive part of the world in which we live, and incidents involving such materials are inevitable. Those persons in manufacturing, using, and transporting hazardous materials are trained to safely undertake initial protective actions when an unplanned release occurs and t ...
chemistry 11 exam review
... 16. What amount of oxygen, in moles, is available for a combustion reaction in a volume of 12.5 L at STP? 17. Potassium metal with a total mass of 15.0 g is dropped into a beaker of water. What volume of hydrogen gas will be produced if the temperature is 15ºC and the pressure is 100 kPa? Chemical e ...
... 16. What amount of oxygen, in moles, is available for a combustion reaction in a volume of 12.5 L at STP? 17. Potassium metal with a total mass of 15.0 g is dropped into a beaker of water. What volume of hydrogen gas will be produced if the temperature is 15ºC and the pressure is 100 kPa? Chemical e ...
Fluorochemical industry
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The global market for chemicals from fluorine was about US$16 billion per year as of 2006. The industry was predicted to reach 2.6 million metric tons per year by 2015. The largest market is the United States. Western Europe is the second largest. Asia Pacific is the fastest growing region of production. China in particular has experienced significant growth as a fluorochemical market and is becoming a producer of them as well. Fluorite mining (the main source of fluorine) was estimated in 2003 to be a $550 million industry, extracting 4.5 million tons per year.Mined fluorite is separated into two main grades, with about equal production of each. Acidspar is at least 97% CaF2; metspar is much lower purity, 60–85%. (A small amount of the intermediate, ceramic, grade is also made.) Metspar is used almost exclusively for iron smelting. Acidspar is primarily converted to hydrofluoric acid (by reaction with sulfuric acid). The resultant HF is mostly used to produce organofluorides and synthetic cryolite.