Chemistry Revision Guide - Mr Cartlidge`s Science Blog
... is used to test the purity of a mixture or to see what it contains. Firstly a very strong solution of the mixture is prepared which is used to build up a small intense spot on a piece of absorbent paper. This is then placed in a jar of solvent (with a lid). As the solvent soaks up the paper, it diss ...
... is used to test the purity of a mixture or to see what it contains. Firstly a very strong solution of the mixture is prepared which is used to build up a small intense spot on a piece of absorbent paper. This is then placed in a jar of solvent (with a lid). As the solvent soaks up the paper, it diss ...
Determination of Active Ingredients in Commercial Bleach and Vinegar
... 1. Demonstrate the analysis of common chemicals using titration technique. 2. Explain the concept of quantitative analysis. 3. Quantitatively determine the amounts in an unknown using standard solutions. 4. Demonstrate the understanding of redox titrations. ...
... 1. Demonstrate the analysis of common chemicals using titration technique. 2. Explain the concept of quantitative analysis. 3. Quantitatively determine the amounts in an unknown using standard solutions. 4. Demonstrate the understanding of redox titrations. ...
Document
... (a) Because copper lies below hydrogen in the activity series of the metals, Cu(s) cannot reduce H+(aq) to H2(g) and be oxidized to Cu2+(aq). Looking at it the other way, H+ is not a strong enough oxidizing agent to oxidize Cu(s) to Cu 2+(aq). Chloride ion in HCl(aq) can only be a reducing agent. As ...
... (a) Because copper lies below hydrogen in the activity series of the metals, Cu(s) cannot reduce H+(aq) to H2(g) and be oxidized to Cu2+(aq). Looking at it the other way, H+ is not a strong enough oxidizing agent to oxidize Cu(s) to Cu 2+(aq). Chloride ion in HCl(aq) can only be a reducing agent. As ...
avogadro exam 2012 - University of Waterloo
... 6. Now answer the exam questions. Questions are not in order of difficulty. Indicate your choice on the STUDENT RESPONSE sheet by marking one letter beside the question number. • Mark only one answer for each question. • Questions are all of the same value. • There is a penalty (1/4 off) for each in ...
... 6. Now answer the exam questions. Questions are not in order of difficulty. Indicate your choice on the STUDENT RESPONSE sheet by marking one letter beside the question number. • Mark only one answer for each question. • Questions are all of the same value. • There is a penalty (1/4 off) for each in ...
CHEMSTRY FREE-RESPONSE QUESTIONS (Form B)
... Answer question 4 below. The section II score weighting for this question is 10 percent. 4. For each of the following three reactions in part (i) write a balanced equation for the reaction and in part (ii) answer the question about the reaction, In part (i), coefficients should be in terms of lowest ...
... Answer question 4 below. The section II score weighting for this question is 10 percent. 4. For each of the following three reactions in part (i) write a balanced equation for the reaction and in part (ii) answer the question about the reaction, In part (i), coefficients should be in terms of lowest ...
Summer Assignment Packet
... tetrafluoride. Decomposition of a sample of sulfur hexafluoride produces 4.45 g of fluorine and 1.25 g of sulfur, while decomposition of a sample of sulfur tetrafluoride produces 4.43 g of fluorine and 1.87 g of sulfur. Calculate the mass of fluorine per gram of sulfur for each sample and show that ...
... tetrafluoride. Decomposition of a sample of sulfur hexafluoride produces 4.45 g of fluorine and 1.25 g of sulfur, while decomposition of a sample of sulfur tetrafluoride produces 4.43 g of fluorine and 1.87 g of sulfur. Calculate the mass of fluorine per gram of sulfur for each sample and show that ...
AP Chemistry Name: Ch.1 – Matter and Measurement Date: Period:
... tetrafluoride. Decomposition of a sample of sulfur hexafluoride produces 4.45 g of fluorine and 1.25 g of sulfur, while decomposition of a sample of sulfur tetrafluoride produces 4.43 g of fluorine and 1.87 g of sulfur. Calculate the mass of fluorine per gram of sulfur for each sample and show that ...
... tetrafluoride. Decomposition of a sample of sulfur hexafluoride produces 4.45 g of fluorine and 1.25 g of sulfur, while decomposition of a sample of sulfur tetrafluoride produces 4.43 g of fluorine and 1.87 g of sulfur. Calculate the mass of fluorine per gram of sulfur for each sample and show that ...
Data Analysis
... experiment is obtained from the slope or intercept of a straight line on a graph - for example, a plot of y against x. In such a case it is desirable to evaluate the uncertainty in the slope or in the position of the intercept. A rough procedure for doing this is based on drawing a rectangle with wi ...
... experiment is obtained from the slope or intercept of a straight line on a graph - for example, a plot of y against x. In such a case it is desirable to evaluate the uncertainty in the slope or in the position of the intercept. A rough procedure for doing this is based on drawing a rectangle with wi ...
A comparison of carbon tetrachloride decomposition
... The number of electrons was important in barrier discharge. Rates of the reactions initiated by electrons increased with the number of electrons. The increase of the specific energy was related to an increase in the number of discharges. Increase in the number of electrons was the result of increasi ...
... The number of electrons was important in barrier discharge. Rates of the reactions initiated by electrons increased with the number of electrons. The increase of the specific energy was related to an increase in the number of discharges. Increase in the number of electrons was the result of increasi ...
Chemistry –Worksheet: Atomic structure
... 21. How many neutrons are in the nucleus of an atom of tungsten-184 which has an atomic number of 74? # of neutrons:_________________ 22. Which of the following combinations of particles represents an ion of net charge -1 and of mass number 82? (A) 46 neutrons, 35 protons, 36 electrons (C) 46 neutro ...
... 21. How many neutrons are in the nucleus of an atom of tungsten-184 which has an atomic number of 74? # of neutrons:_________________ 22. Which of the following combinations of particles represents an ion of net charge -1 and of mass number 82? (A) 46 neutrons, 35 protons, 36 electrons (C) 46 neutro ...
Chemistry Chapter 9.1 Making Predictions About Solubility
... inside hot water pipes; commonly called boiler scale; reduces flow of water in pipes; increases cost of heating water Simple way of removing boiler scale from inside a kettle or coffee maker is to add vinegar; acetic acid reacts with calcium (and magnesium) carbonates to form soluble ...
... inside hot water pipes; commonly called boiler scale; reduces flow of water in pipes; increases cost of heating water Simple way of removing boiler scale from inside a kettle or coffee maker is to add vinegar; acetic acid reacts with calcium (and magnesium) carbonates to form soluble ...
Honors Chemistry
... a. The formation of HCl and H2 from H2 and Cl2 b. The color change when NO is exposed to air c. The formation of steam from burning H2 and O2 d. The solidification of corn oil at low temperatures e. the odor of NH3 when NH4Cl is rubbed together with Ca(OH)2 powder? ...
... a. The formation of HCl and H2 from H2 and Cl2 b. The color change when NO is exposed to air c. The formation of steam from burning H2 and O2 d. The solidification of corn oil at low temperatures e. the odor of NH3 when NH4Cl is rubbed together with Ca(OH)2 powder? ...
Unit 8 Homework Packet
... 11. Although we usually think of substances as "burning" only in oxygen gas, the process of rapid oxidation to produce a flame may also take place in other strongly oxidizing gases. For example, when iron is heated and placed in pure chlorine gas, the iron "burns" according to the following (unbalan ...
... 11. Although we usually think of substances as "burning" only in oxygen gas, the process of rapid oxidation to produce a flame may also take place in other strongly oxidizing gases. For example, when iron is heated and placed in pure chlorine gas, the iron "burns" according to the following (unbalan ...
Year End Review
... 11. Which of the following statements is FALSE concerning the elements X, Y, Z and their ions? a. The ions X- and Z+ would have the same number of electrons as neutral atoms of element Y. b. Atoms of element Y would react with either those of elements X or Z. c. Element X would form a compound with ...
... 11. Which of the following statements is FALSE concerning the elements X, Y, Z and their ions? a. The ions X- and Z+ would have the same number of electrons as neutral atoms of element Y. b. Atoms of element Y would react with either those of elements X or Z. c. Element X would form a compound with ...
Mass # = Atomic # + # Neutrons
... If two or more compounds are composed of the same two elements, then the mass ratio(s) of one of the elements will always be a ratio of small whole numbers. Example: at least three different compounds containing just chromium and chlorine are known. Data for these three compounds is given in the tab ...
... If two or more compounds are composed of the same two elements, then the mass ratio(s) of one of the elements will always be a ratio of small whole numbers. Example: at least three different compounds containing just chromium and chlorine are known. Data for these three compounds is given in the tab ...
name chemistry final review
... What does Boyle’s Law state? Its formula? What 2 factors must be held constant for this law to be true? Pressure and volume are inversely related to each other when temperature and the number of m ...
... What does Boyle’s Law state? Its formula? What 2 factors must be held constant for this law to be true? Pressure and volume are inversely related to each other when temperature and the number of m ...
N5 Chemistry Summary notes 2017
... The relative atomic mass is the average mass of all the isotopes an element has. It is rarely a whole number but has been rounded off to the nearest 0.5. Relative Atomic Masses in the data book as always closest to the most abundant isotope. The ram for chlorine (on page 4 of the data book) is 35.5. ...
... The relative atomic mass is the average mass of all the isotopes an element has. It is rarely a whole number but has been rounded off to the nearest 0.5. Relative Atomic Masses in the data book as always closest to the most abundant isotope. The ram for chlorine (on page 4 of the data book) is 35.5. ...
apchem - practice midterm_shs
... from the number of questions you answer correctly. It is improbable, therefore, that mere guessing will improve your score significantly; it may even lower your score, and it does take time. If, however, you are not sure of the correct answer but have some knowledge of the question and are able to e ...
... from the number of questions you answer correctly. It is improbable, therefore, that mere guessing will improve your score significantly; it may even lower your score, and it does take time. If, however, you are not sure of the correct answer but have some knowledge of the question and are able to e ...
Flexbook - Ions and Ion Formation
... of family 3A. The large jump occurs between the 3rd and 4th ionization energies, so we know that only the first three electrons can be easily removed from this atom. The logic for the formation of anions is very similar to that for cations. A fluorine atom, for example, has a high electron affinity ...
... of family 3A. The large jump occurs between the 3rd and 4th ionization energies, so we know that only the first three electrons can be easily removed from this atom. The logic for the formation of anions is very similar to that for cations. A fluorine atom, for example, has a high electron affinity ...
Fall 2008 Blank Final Exam
... Select the best multiple-choice answer by filling in the corresponding circle on the rear page of the answer sheet. If you have any questions before the exam, please ask. If you have any questions during the exam, please ask the proctor. Open and start this exam when instructed. When finished, place ...
... Select the best multiple-choice answer by filling in the corresponding circle on the rear page of the answer sheet. If you have any questions before the exam, please ask. If you have any questions during the exam, please ask the proctor. Open and start this exam when instructed. When finished, place ...
Chapter 4: Aqueous Reactions and Solution Stoichiometry
... A species is oxidized when it loses electrons. Here, zinc loses two electrons to go from neutral zinc metal to the Zn2+ ion. ...
... A species is oxidized when it loses electrons. Here, zinc loses two electrons to go from neutral zinc metal to the Zn2+ ion. ...
Final Exam Review Packet
... tetraphosphorus decasulfide can be produced, assuming an 80.0% yield for the reaction a. b. c. d. e. ...
... tetraphosphorus decasulfide can be produced, assuming an 80.0% yield for the reaction a. b. c. d. e. ...
AP Chem Stoichiometry Notes Table of Contents Atomic Masses
... (b) Determine its molar mass. (c) Calculate the mass of 3 moles of glycine. (d) Calculate the percent nitrogen by mass in glycine. o Sample Exercise 3.6 – Calculating Molar Mass Juglone, a dye known for centuries, is produced from the husks of black walnuts. It is also a natural herbicide (weed kill ...
... (b) Determine its molar mass. (c) Calculate the mass of 3 moles of glycine. (d) Calculate the percent nitrogen by mass in glycine. o Sample Exercise 3.6 – Calculating Molar Mass Juglone, a dye known for centuries, is produced from the husks of black walnuts. It is also a natural herbicide (weed kill ...
Bellin College Homework Supplement
... lowering the body temperature will reduce the amount of oxygen needed by the body. Some methods used to lower body temperature include cooled saline solution, cool water blankets, or cooling caps worn on the head. How many kilojoules are lost when the body temperature of a surgery patient with a blo ...
... lowering the body temperature will reduce the amount of oxygen needed by the body. Some methods used to lower body temperature include cooled saline solution, cool water blankets, or cooling caps worn on the head. How many kilojoules are lost when the body temperature of a surgery patient with a blo ...
PHYSICAL SETTING CHEMISTRY
... Thursday, August 16, 2007 — 12:30 to 3:30 p.m., only This is a test of your knowledge of chemistry. Use that knowledge to answer all questions in this examination. Some questions may require the use of the Reference Tables for Physical Setting/Chemistry. You are to answer all questions in all parts ...
... Thursday, August 16, 2007 — 12:30 to 3:30 p.m., only This is a test of your knowledge of chemistry. Use that knowledge to answer all questions in this examination. Some questions may require the use of the Reference Tables for Physical Setting/Chemistry. You are to answer all questions in all parts ...
Inductively coupled plasma mass spectrometry
Inductively coupled plasma mass spectrometry (ICP-MS) is a type of mass spectrometry which is capable of detecting metals and several non-metals at concentrations as low as one part in 1015 (part per quadrillion, ppq) on non-interfered low-background isotopes. This is achieved by ionizing the sample with inductively coupled plasma and then using a mass spectrometer to separate and quantify those ions.Compared to atomic absorption techniques, ICP-MS has greater speed, precision, and sensitivity. However, compared with other types of mass spectrometry, such as Thermal ionization mass spectrometry (TIMS) and Glow Discharge Mass Spectrometry (GD-MS), ICP-MS introduces a lot of interfering species: argon from the plasma, component gasses of air that leak through the cone orifices, and contamination from glassware and the cones.The variety of applications exceeds that of inductively coupled plasma atomic emission spectroscopy and includes isotopic speciation. Due to possible applications in nuclear technologies, ICP-MS hardware is a subject for special exporting regulations.