Chapter 12 - "Chemical Formulas and Equations"
... • Mercury (II) oxide is decomposed by heat, leaving the silver-colored element mercury behind as oxygen is driven off. This is an example of a decomposition reaction, 2 HgO 2 HG + O2 . Compare this equation to the general form of a decomposition reaction. ...
... • Mercury (II) oxide is decomposed by heat, leaving the silver-colored element mercury behind as oxygen is driven off. This is an example of a decomposition reaction, 2 HgO 2 HG + O2 . Compare this equation to the general form of a decomposition reaction. ...
Honors-Final-Review-2014
... calcium oxide __________________________ Iron (II)chloride ________________________ Copper(II) hydroxide _________________________ Acetic acid ______________________________ Magnesium phosphate ________________________ Ammonium dichromate ___________________________ 3. Covalent compounds are formed ...
... calcium oxide __________________________ Iron (II)chloride ________________________ Copper(II) hydroxide _________________________ Acetic acid ______________________________ Magnesium phosphate ________________________ Ammonium dichromate ___________________________ 3. Covalent compounds are formed ...
2010 - SAASTA
... carbon (as coke) reacts with oxygen to form carbon dioxide. This is an exothermic reaction and this part of the furnace reaches temperatures of almost 2000°C. Hot CO 2 rises up the furnace and reacts with additional carbon to form carbon monoxide. This is an endothermic reaction. Carbon monoxide rea ...
... carbon (as coke) reacts with oxygen to form carbon dioxide. This is an exothermic reaction and this part of the furnace reaches temperatures of almost 2000°C. Hot CO 2 rises up the furnace and reacts with additional carbon to form carbon monoxide. This is an endothermic reaction. Carbon monoxide rea ...
syllabus details - hrsbstaff.ednet.ns.ca
... Cross reference with topics 2, 4 and 5. Data for all these properties are listed in the data booklet. Explanations for the first four trends should be given in terms of the balance between the attraction of the nucleus for the electrons and the repulsion between electrons. Explanations based on effe ...
... Cross reference with topics 2, 4 and 5. Data for all these properties are listed in the data booklet. Explanations for the first four trends should be given in terms of the balance between the attraction of the nucleus for the electrons and the repulsion between electrons. Explanations based on effe ...
Bal Equations notes.cwk (WP)
... The Conservation of Matter states that “matter can neither be created nor destroyed, it just changes form”. If this is the case then we must account for all of the atoms in a chemical reaction. We cannot change the way compounds are put together but we can adjust the number of compounds that are mad ...
... The Conservation of Matter states that “matter can neither be created nor destroyed, it just changes form”. If this is the case then we must account for all of the atoms in a chemical reaction. We cannot change the way compounds are put together but we can adjust the number of compounds that are mad ...
New AQA C3 revison guide
... Br2 + 2NaI = I2 + 2KBr THE TRANSITION METALS This is the block which appears in the middle of the periodic table. It contains many of the metals in everyday use, such as iron, nickel and copper. Properties These metals tend to be strong and dense, with a fairly high melting point. Their reactions ar ...
... Br2 + 2NaI = I2 + 2KBr THE TRANSITION METALS This is the block which appears in the middle of the periodic table. It contains many of the metals in everyday use, such as iron, nickel and copper. Properties These metals tend to be strong and dense, with a fairly high melting point. Their reactions ar ...
Key - GCC
... 14. List the three types of redox reactions and describe how you can identify them: Combination (two or more elements or compounds combine to form a single product); Decomposition (one compound decomposes, usually with heat, to give off a gas and another substance); Singlereplacement (one element an ...
... 14. List the three types of redox reactions and describe how you can identify them: Combination (two or more elements or compounds combine to form a single product); Decomposition (one compound decomposes, usually with heat, to give off a gas and another substance); Singlereplacement (one element an ...
Chem 171 Review Exam 2
... Enthalpy, ΔH: equate enthalpy change for a process to energy change for that process if it occurs at constant P; ΔH = qP ΔH = Hfinal — Hinitial ΔH associated with physical changes: ΔHvap, ΔH fus, ΔH sub where vap = vaporization, (g l), fus = fusion (l s), sub = sublimation (s g). This is not i ...
... Enthalpy, ΔH: equate enthalpy change for a process to energy change for that process if it occurs at constant P; ΔH = qP ΔH = Hfinal — Hinitial ΔH associated with physical changes: ΔHvap, ΔH fus, ΔH sub where vap = vaporization, (g l), fus = fusion (l s), sub = sublimation (s g). This is not i ...
Packet #7- Chemical Reactions
... represent substances in symbol equations. Molecular formulas show the number of each type of atom in a molecule, while displayed formulas show the atoms and bonds in a molecule. Reactions and compounds New substances are formed by chemical reactions. When elements react together to form compounds th ...
... represent substances in symbol equations. Molecular formulas show the number of each type of atom in a molecule, while displayed formulas show the atoms and bonds in a molecule. Reactions and compounds New substances are formed by chemical reactions. When elements react together to form compounds th ...
TIPS for NET-IONIC EQUATIONS A.P. Chemistry (long form)
... 5. solid potassium chlorate is heated in the presence of a manganese(IV) oxide catalyst 6. a solution of hydrogen peroxide is heated ...
... 5. solid potassium chlorate is heated in the presence of a manganese(IV) oxide catalyst 6. a solution of hydrogen peroxide is heated ...
Document
... Oxidation-reduction (redox) reaction: electrons are transferred from one reactant to the other Oxidation numbers: keep track of electrons in a reaction Rules for Assigning Oxidation Numbers (must be memorized) ...
... Oxidation-reduction (redox) reaction: electrons are transferred from one reactant to the other Oxidation numbers: keep track of electrons in a reaction Rules for Assigning Oxidation Numbers (must be memorized) ...
1 - gcisd
... 30. Water has several unique properties such as high boiling point, high surface tension and low vapor pressure. What are the main causes for these properties? 31. What happens at the triple point on a phase diagram? 32. Like dissolves like refers to the molecule’s _________________________. 33. Wha ...
... 30. Water has several unique properties such as high boiling point, high surface tension and low vapor pressure. What are the main causes for these properties? 31. What happens at the triple point on a phase diagram? 32. Like dissolves like refers to the molecule’s _________________________. 33. Wha ...
08_Lecture - HCC Learning Web
... • When we write a chemical equation, the number of atoms of each element must be the same on both sides of the arrow. • This is called a balanced chemical equation. • We balance chemical reactions by placing a whole number coefficient in front of each substance. • A coefficient multiplies all subscr ...
... • When we write a chemical equation, the number of atoms of each element must be the same on both sides of the arrow. • This is called a balanced chemical equation. • We balance chemical reactions by placing a whole number coefficient in front of each substance. • A coefficient multiplies all subscr ...
Unit 6 – Chemical Reactions: Particles and Energy
... from the complete reaction. Write that number as a coefficient in front of each product formula. ...
... from the complete reaction. Write that number as a coefficient in front of each product formula. ...
PHYSICAL SETTING CHEMISTRY
... 51 Draw a Lewis electron-dot diagram for an atom of silicon. [1] Base your answers to questions 52 through 54 on the information below. ...
... 51 Draw a Lewis electron-dot diagram for an atom of silicon. [1] Base your answers to questions 52 through 54 on the information below. ...
File
... 2. The oxidation number of a monatomic ion equals the charge on the ion. Example: Mg2+ has the oxidation number of +2. 3. The more electronegative element in a binary compound is assigned the number equal to the charge it would have if it were an ion. 4. The oxidation number of fluorine in a compoun ...
... 2. The oxidation number of a monatomic ion equals the charge on the ion. Example: Mg2+ has the oxidation number of +2. 3. The more electronegative element in a binary compound is assigned the number equal to the charge it would have if it were an ion. 4. The oxidation number of fluorine in a compoun ...
AP® Chemistry 2009 Free-Response Questions - AP Central
... (e) Calculate the percent error in the value of the molar mass calculated in part (d). (f) For each of the following two possible occurrences, indicate whether it by itself could have been responsible for the error in the student’s experimental result. You need not include any calculations with your ...
... (e) Calculate the percent error in the value of the molar mass calculated in part (d). (f) For each of the following two possible occurrences, indicate whether it by itself could have been responsible for the error in the student’s experimental result. You need not include any calculations with your ...
9 free IB Chem labs (sent to OCC) - VicPark-IBRoundtable-2009
... 8. Repeat this experiment a total of 3 times. Data Collection and Processing: Since we are using data logging software, you must be careful to take the raw data and present it in your own words and your own table. ...
... 8. Repeat this experiment a total of 3 times. Data Collection and Processing: Since we are using data logging software, you must be careful to take the raw data and present it in your own words and your own table. ...
final-H-2006-07-v1
... a. always equal c. always larger b. always smaller d. sometimes smaller, sometimes larger 10. What happens to the bonds between atoms in a substance that undergoes a chemical reaction? a. All single covalent bonds become double covalent bonds. b. Some existing bonds will weaken while others will str ...
... a. always equal c. always larger b. always smaller d. sometimes smaller, sometimes larger 10. What happens to the bonds between atoms in a substance that undergoes a chemical reaction? a. All single covalent bonds become double covalent bonds. b. Some existing bonds will weaken while others will str ...
final-H-2006-07-v2
... a. always equal c. always larger b. always smaller d. sometimes smaller, sometimes larger 14. What happens to the bonds between atoms in a substance that undergoes a chemical reaction? a. All single covalent bonds become double covalent bonds. b. Some existing bonds will weaken while others will str ...
... a. always equal c. always larger b. always smaller d. sometimes smaller, sometimes larger 14. What happens to the bonds between atoms in a substance that undergoes a chemical reaction? a. All single covalent bonds become double covalent bonds. b. Some existing bonds will weaken while others will str ...
Chemistry Final Exam Review 2006-2007
... a) What is the specific heat of a metal that releases 2500 J of energy. The metal has a mass of 25 g and had a temperature change of 5C. b) How much heat is released when iron is dropped in a beaker of water. The mass of the metal was 43 g and the initial temperature of the metal was 78 C. The water ...
... a) What is the specific heat of a metal that releases 2500 J of energy. The metal has a mass of 25 g and had a temperature change of 5C. b) How much heat is released when iron is dropped in a beaker of water. The mass of the metal was 43 g and the initial temperature of the metal was 78 C. The water ...
Lewis acid catalysis
In Lewis acid catalysis of organic reactions, a metal-based Lewis acid acts as an electron pair acceptor to increase the reactivity of a substrate. Common Lewis acid catalysts are based on main group metals such as aluminum, boron, silicon, and tin, as well as many early (titanium, zirconium) and late (iron, copper, zinc) d-block metals. The metal atom forms an adduct with a lone-pair bearing electronegative atom in the substrate, such as oxygen (both sp2 or sp3), nitrogen, sulfur, and halogens. The complexation has partial charge-transfer character and makes the lone-pair donor effectively more electronegative, activating the substrate toward nucleophilic attack, heterolytic bond cleavage, or cycloaddition with 1,3-dienes and 1,3-dipoles.Many classical reactions involving carbon–carbon or carbon–heteroatom bond formation can be catalyzed by Lewis acids. Examples include the Friedel-Crafts reaction, the aldol reaction, and various pericyclic processes that proceed slowly at room temperature, such as the Diels-Alder reaction and the ene reaction. In addition to accelerating the reactions, Lewis acid catalysts are able to impose regioselectivity and stereoselectivity in many cases.Early developments in Lewis acid reagents focused on easily available compounds such as TiCl4, BF3, SnCl4, and AlCl3. The relative strengths of these (and other) Lewis acids may be estimated from NMR spectroscopy by the Childs method or the Gutmann-Beckett method. Over the years, versatile catalysts bearing ligands designed for specific applications have facilitated improvement in both reactivity and selectivity of Lewis acid-catalyzed reactions. More recently, Lewis acid catalysts with chiral ligands have become an important class of tools for asymmetric catalysis.Challenges in the development of Lewis acid catalysis include inefficient catalyst turnover (caused by catalyst affinity for the product) and the frequent requirement of two-point binding for stereoselectivity, which often necessitates the use of auxiliary groups.