No Slide Title
... The charge the atom would have in a molecule (or an ionic compound) if electrons were completely transferred. 1. Free elements (uncombined state) have an oxidation number of zero. ...
... The charge the atom would have in a molecule (or an ionic compound) if electrons were completely transferred. 1. Free elements (uncombined state) have an oxidation number of zero. ...
AP CHEMISTRY SUMMER 2016
... a. F2 b. Cl2 c. C d. NaCl e. KF f. CO2 g. H2 h. Ag i. Rust (Fe2O3) j. MgO k. O2 l. I2 m.CO n. K2CO3 ...
... a. F2 b. Cl2 c. C d. NaCl e. KF f. CO2 g. H2 h. Ag i. Rust (Fe2O3) j. MgO k. O2 l. I2 m.CO n. K2CO3 ...
Chemical Reaction and Matter Review
... be composed of metallic positive ions (cations) and nonmetal negative ions (anions). When dealing with ionic formulas it is very important to remember that the formula does not show how the compound actually exists in nature. It only shows the ratio by which the individual ions combine. For example, ...
... be composed of metallic positive ions (cations) and nonmetal negative ions (anions). When dealing with ionic formulas it is very important to remember that the formula does not show how the compound actually exists in nature. It only shows the ratio by which the individual ions combine. For example, ...
word doc (perfect formatting)
... Which two species are isoelectronic, i.e., they contain the same number of electrons? A. Rb+ and K+ B. Cl and Na+ C. Cl- and Br- D. Fe2+ and Co2+ E. N-3 and Na+ ...
... Which two species are isoelectronic, i.e., they contain the same number of electrons? A. Rb+ and K+ B. Cl and Na+ C. Cl- and Br- D. Fe2+ and Co2+ E. N-3 and Na+ ...
Unit 2 - Calderglen High School
... (a) Draw a structural formula for the product formed when propanone is used instead of ethanal in this type of reaction. (1) (b) Name an aldehyde that would not take part in an aldol condensation. (1) (c) Apart from the structure of the reactants, suggest what is unusual about applying the term “con ...
... (a) Draw a structural formula for the product formed when propanone is used instead of ethanal in this type of reaction. (1) (b) Name an aldehyde that would not take part in an aldol condensation. (1) (c) Apart from the structure of the reactants, suggest what is unusual about applying the term “con ...
Chapter 4: Solution Chemistry and the Hydrosphere
... Li > K> Ba > Sr > Ca > Na Active metals react directly with water: The active metal replaces the less active by going into solution as an ion with hydroxide, OH–, and the H comes out as hydrogen gas, H2(g). active metal + H2O(l) metal hydroxide + H2(g) 1. Ca(s) + H2O(l) 2. Na(s) + H2O(l) 3. Fe ...
... Li > K> Ba > Sr > Ca > Na Active metals react directly with water: The active metal replaces the less active by going into solution as an ion with hydroxide, OH–, and the H comes out as hydrogen gas, H2(g). active metal + H2O(l) metal hydroxide + H2(g) 1. Ca(s) + H2O(l) 2. Na(s) + H2O(l) 3. Fe ...
PowerPoint
... standardize the base solution, by placing 50.00 mg of solid potassium hydrogenphthalate in a flask with a few drops of an indicator. A buret is filled with the base, and the initial buret reading is 0.55 ml; at the end of the titration the buret reading is 33.87 ml. What is the concentration of the ...
... standardize the base solution, by placing 50.00 mg of solid potassium hydrogenphthalate in a flask with a few drops of an indicator. A buret is filled with the base, and the initial buret reading is 0.55 ml; at the end of the titration the buret reading is 33.87 ml. What is the concentration of the ...
Density of solutions answers The concentration of solutions is often
... measured excess of standard acid, and then titrate(with standard sodium hydroxide solution) the portion of the acid that was not consumed by the tablet. Explain. Some of the common bases used as the active ingredient in commercial antacid tablets are listed below. Calculate the number of milliliters ...
... measured excess of standard acid, and then titrate(with standard sodium hydroxide solution) the portion of the acid that was not consumed by the tablet. Explain. Some of the common bases used as the active ingredient in commercial antacid tablets are listed below. Calculate the number of milliliters ...
Acid Base Equilibria
... A weak acid will, however, only partially dissociate into ions, leaving a high percentage of unreacted molecules in the solution. Equilibrium is established, and so when some of the H3O+ ions produced by a weak acid react, Le Chatelier's principle means that more of the acid will react to form H3O+ ...
... A weak acid will, however, only partially dissociate into ions, leaving a high percentage of unreacted molecules in the solution. Equilibrium is established, and so when some of the H3O+ ions produced by a weak acid react, Le Chatelier's principle means that more of the acid will react to form H3O+ ...
AP Chemistry Summer Assignment
... 54. A sample of dolomitic limestone containing only CaCO3 and MgCO3 was analyzed. (a) When a 0.2800 gram sample of this limestone was decomposed by heating, 0.00308 moles of CO2 were evolved. How many grams of CO2 were produced? ...
... 54. A sample of dolomitic limestone containing only CaCO3 and MgCO3 was analyzed. (a) When a 0.2800 gram sample of this limestone was decomposed by heating, 0.00308 moles of CO2 were evolved. How many grams of CO2 were produced? ...
intermediate chemistry may 2011 marking scheme
... Although the elements carbon and silicon are in the same group of the Periodic Table, carbon dioxide is a gas at room temperature while silicon dioxide is a crystalline high melting point solid. Both C and Si have the same number of electrons, namely 4, in the outer shell and hence are in the same g ...
... Although the elements carbon and silicon are in the same group of the Periodic Table, carbon dioxide is a gas at room temperature while silicon dioxide is a crystalline high melting point solid. Both C and Si have the same number of electrons, namely 4, in the outer shell and hence are in the same g ...
Formulae and equations
... The smallest particle of a compound (a combination of two or more elements). It is also the name given to the smallest part of those elements which do not exist as atoms in the free state i.e. hydrogen H2, oxygen O2, nitrogen N2, fluorine F2, chlorine Cl2, bromine Br2 and iodine I2. N.B. ionic compo ...
... The smallest particle of a compound (a combination of two or more elements). It is also the name given to the smallest part of those elements which do not exist as atoms in the free state i.e. hydrogen H2, oxygen O2, nitrogen N2, fluorine F2, chlorine Cl2, bromine Br2 and iodine I2. N.B. ionic compo ...
acids - WordPress.com
... salt and water only. eg. CuO, MgO, CaO, KOH Bases are generally metal oxides or hydroxides. NOTE: All basic oxides are ‘soluble’ in acids (react). But only a few are soluble in water. Basic oxides which are soluble in water form hydroxides called alkalis. An alkali is a basic oxide which is so ...
... salt and water only. eg. CuO, MgO, CaO, KOH Bases are generally metal oxides or hydroxides. NOTE: All basic oxides are ‘soluble’ in acids (react). But only a few are soluble in water. Basic oxides which are soluble in water form hydroxides called alkalis. An alkali is a basic oxide which is so ...
Review #7: Solutions, Acids and Bases 1. Definitions: a) Solution: a
... matter (the substance looks the completely uniform, regardless of what part you look at) g) Heterogeneous: means that a substance is not the same throughout; there are two or more visible phases of matter. You can see different regions in the substance, it is not uniform. h) Alloy: a solid in solid ...
... matter (the substance looks the completely uniform, regardless of what part you look at) g) Heterogeneous: means that a substance is not the same throughout; there are two or more visible phases of matter. You can see different regions in the substance, it is not uniform. h) Alloy: a solid in solid ...
Give reasons for the following: (i) Bond enthalpy of F2
... Helium mixed with oxygen under pressure is given to sea-divers for respiration. Air is not given to sea-divers because nitrogen present in air being soluble in blood will give a painful sensation called bends by bubbling out blood on moving from high pressure(in deep sea) to the atmospheric pressure ...
... Helium mixed with oxygen under pressure is given to sea-divers for respiration. Air is not given to sea-divers because nitrogen present in air being soluble in blood will give a painful sensation called bends by bubbling out blood on moving from high pressure(in deep sea) to the atmospheric pressure ...
AP Chemistry Summer Assignment THIS
... AP Chemistry can be considered as the second year of a two year program. The topics covered at the beginning of the year are mostly review from first year chemistry so we will move very quickly through this material. The purpose of this assignment is to review some of the material you learned last y ...
... AP Chemistry can be considered as the second year of a two year program. The topics covered at the beginning of the year are mostly review from first year chemistry so we will move very quickly through this material. The purpose of this assignment is to review some of the material you learned last y ...
GCSE_C2_Revision_+_Exam_Questions
... that lose electrons become positively charged ions. Atoms that gain electrons become negatively charged ions. Ions have the electronic structure of a noble gas (Group 0). The elements in Group 1 of the periodic table, the alkali metals, have similar chemical properties. They all react with non-metal ...
... that lose electrons become positively charged ions. Atoms that gain electrons become negatively charged ions. Ions have the electronic structure of a noble gas (Group 0). The elements in Group 1 of the periodic table, the alkali metals, have similar chemical properties. They all react with non-metal ...
The Copper Cycle
... and excess hydronium ions (H3O+) remain from the nitric acid used. 2nd Beaker: Adding NaOH(aq) to the blue solution results in the OH– ions neutralizing the H3O+ ions to form water: H3O+(aq) + OH–(aq) → 2 H2O(l). The Na+ ions and resulting water molecules are not shown. 3rd and 4th Beakers: Once all ...
... and excess hydronium ions (H3O+) remain from the nitric acid used. 2nd Beaker: Adding NaOH(aq) to the blue solution results in the OH– ions neutralizing the H3O+ ions to form water: H3O+(aq) + OH–(aq) → 2 H2O(l). The Na+ ions and resulting water molecules are not shown. 3rd and 4th Beakers: Once all ...
C1 – Topic 2 notes - ARK Elvin Academy
... Chemical equation: CaO (s) + H2O (l) Ca(OH)2 (s) In this reaction calcium oxide dissolves in water to form calcium hydroxide – a crumbly, white solid... o Heat is given off o Fizzing o Steam is produced When more water is added, calcium hydroxide dissolves to form a colourless calcium hydroxide so ...
... Chemical equation: CaO (s) + H2O (l) Ca(OH)2 (s) In this reaction calcium oxide dissolves in water to form calcium hydroxide – a crumbly, white solid... o Heat is given off o Fizzing o Steam is produced When more water is added, calcium hydroxide dissolves to form a colourless calcium hydroxide so ...
Hydroxide
Hydroxide is a diatomic anion with chemical formula OH−. It consists of an oxygen and hydrogen atom held together by a covalent bond, and carries a negative electric charge. It is an important but usually minor constituent of water. It functions as a base, a ligand, a nucleophile and a catalyst. The hydroxide ion forms salts, some of which dissociate in aqueous solution, liberating solvated hydroxide ions. Sodium hydroxide is a multi-million-ton per annum commodity chemical. A hydroxide attached to a strongly electropositive center may itself ionize, liberating a hydrogen cation (H+), making the parent compound an acid.The corresponding electrically neutral compound •HO is the hydroxyl radical. The corresponding covalently-bound group -OH of atoms is the hydroxyl group.Hydroxide ion and hydroxyl group are nucleophiles and can act as a catalyst in organic chemistry.Many inorganic substances which bear the word ""hydroxide"" in their names are not ionic compounds of the hydroxide ion, but covalent compounds which contain hydroxyl groups.