Chapter 1 Review Questions
... 26. Water molecules have a partial negative charge on the end of the molecule occupied by the oxygen atom and a partial positive charge on the end occupied by the hydrogen atoms. The result is that water molecules can readily dissolve ionic compounds because the positive and negative ions can be pul ...
... 26. Water molecules have a partial negative charge on the end of the molecule occupied by the oxygen atom and a partial positive charge on the end occupied by the hydrogen atoms. The result is that water molecules can readily dissolve ionic compounds because the positive and negative ions can be pul ...
Review Station Ideas
... Station 9 – LOOSE ENDS Solids dissolve best in __hot______ (hot | cool) water. Gases dissolve best in __cool_______ (hot | cool) water. Gases dissolve best when the gas pressure above the solvent is __high_____ (high | low). O2(g) would dissolve in water best: (A) 20C and 2 atm pressure ...
... Station 9 – LOOSE ENDS Solids dissolve best in __hot______ (hot | cool) water. Gases dissolve best in __cool_______ (hot | cool) water. Gases dissolve best when the gas pressure above the solvent is __high_____ (high | low). O2(g) would dissolve in water best: (A) 20C and 2 atm pressure ...
types of solutions
... · Solutions with osmolarity and osmotic pressure lower than the cells are called hypotonic solutions. · Solution with osmolarity and osmotic pressure greater than cells are called hypertonic solutions. Example: Determine the tonicity of each of the following solutions. Cells have an ion conce ...
... · Solutions with osmolarity and osmotic pressure lower than the cells are called hypotonic solutions. · Solution with osmolarity and osmotic pressure greater than cells are called hypertonic solutions. Example: Determine the tonicity of each of the following solutions. Cells have an ion conce ...
GCE Getting Started - Edexcel
... Atoms of metallic elements in Groups 1,2 and 3 can form positive ions when they take part in reactions since they are readily able to lose electrons. Atoms of Group 1 metals lose one electron and form ions with a 1+ charge, e.g. Na+ Atoms of Group 2 metals lose two electrons and form ions with a 2+ ...
... Atoms of metallic elements in Groups 1,2 and 3 can form positive ions when they take part in reactions since they are readily able to lose electrons. Atoms of Group 1 metals lose one electron and form ions with a 1+ charge, e.g. Na+ Atoms of Group 2 metals lose two electrons and form ions with a 2+ ...
QualGroupD
... as their sulfides. This supernatant may contain Zn2+ and Mg2+, and possibly some Ni2+. Magnesium and zinc ions are typically colorless in solution; the presence of Ni2+ may give a characteristic color to the solution. The solution is made slightly basic with aqueous ammonia, and disodium hydrogen ph ...
... as their sulfides. This supernatant may contain Zn2+ and Mg2+, and possibly some Ni2+. Magnesium and zinc ions are typically colorless in solution; the presence of Ni2+ may give a characteristic color to the solution. The solution is made slightly basic with aqueous ammonia, and disodium hydrogen ph ...
Chemistry - Nagpur University
... characteristics of covalent bond, overlap criterion and bond strength. Bond energy, bond length, Bond order, Bond angle. Various types of hybridization and shape of inorganic molecules.Valence shell electron pair repulsion (VSEPR) theory toNH3, SF4,ClF3, and H2O (B)Ionic solids: Ionic structures, La ...
... characteristics of covalent bond, overlap criterion and bond strength. Bond energy, bond length, Bond order, Bond angle. Various types of hybridization and shape of inorganic molecules.Valence shell electron pair repulsion (VSEPR) theory toNH3, SF4,ClF3, and H2O (B)Ionic solids: Ionic structures, La ...
Chapter 4 Student Presentation
... • Ions move to cause electric current to flow through solution. • Electrolytes - Soluble ionic compounds • Non-electrolytes Molecular compounds ...
... • Ions move to cause electric current to flow through solution. • Electrolytes - Soluble ionic compounds • Non-electrolytes Molecular compounds ...
How Atoms Bond: Ionic Bonds
... You probably know: opposites attract. Positive sodium and negative chloride ions are strongly attracted to each other – and that attraction is what bonds Na+ and Cl- ions together form NaCl: sodium chloride. Most chemical bonds are ionic, like the ones that forms salt, or covalent – that’s where ato ...
... You probably know: opposites attract. Positive sodium and negative chloride ions are strongly attracted to each other – and that attraction is what bonds Na+ and Cl- ions together form NaCl: sodium chloride. Most chemical bonds are ionic, like the ones that forms salt, or covalent – that’s where ato ...
Hydrocarbon ions in fuel-rich, CH4-C2H2-0, flames
... (CI) processes are summarized including their dependence on temperature, pressure, and equivalence ratio 4. Extensive data were presented previously involving ion concentration profiles measured with a mass spectrometer as afunction of distance along the axis of conical flames. An understanding of t ...
... (CI) processes are summarized including their dependence on temperature, pressure, and equivalence ratio 4. Extensive data were presented previously involving ion concentration profiles measured with a mass spectrometer as afunction of distance along the axis of conical flames. An understanding of t ...
NZIC 2012 - Rangiora High School
... As the concentration of HCl increases, the time taken for the cross to disappear decreases. A higher concentration of HCl means there are more HCl molecules per unit volume to react at any one time. This increases the total number of collisions per second (frequency of collisions) to give a faster r ...
... As the concentration of HCl increases, the time taken for the cross to disappear decreases. A higher concentration of HCl means there are more HCl molecules per unit volume to react at any one time. This increases the total number of collisions per second (frequency of collisions) to give a faster r ...
ExamView - Chap_Test_v2.tst
... compound may be used more than once. a. ionic compound b. covalent compound ____ 23. this compound forms when metals react with non-metals ____ 24. molecules exist in this compound ____ 25. the name of this compound may include Roman numerals ____ 26. electrons are transferred when this compound for ...
... compound may be used more than once. a. ionic compound b. covalent compound ____ 23. this compound forms when metals react with non-metals ____ 24. molecules exist in this compound ____ 25. the name of this compound may include Roman numerals ____ 26. electrons are transferred when this compound for ...
Oxidation and Reduction Reactions
... Single Cell filled with electrolyte with +/- ions Attach battery to two electrodes. Electrodes are made of an inert substance (like platinum or graphite) that conducts. Electrodes don’t chemically change like in a battery, ...
... Single Cell filled with electrolyte with +/- ions Attach battery to two electrodes. Electrodes are made of an inert substance (like platinum or graphite) that conducts. Electrodes don’t chemically change like in a battery, ...
P BLOCK ELEMENT
... Oxidation states: The expected oxidation states are +3 and +1. Boron shows +3 oxidation state in all its compounds. Other members show +3 and +1 oxidation states. The stability of +1 oxidation state increases from aluminium to thallium and the stability of +3 oxidation state decrease from aluminium ...
... Oxidation states: The expected oxidation states are +3 and +1. Boron shows +3 oxidation state in all its compounds. Other members show +3 and +1 oxidation states. The stability of +1 oxidation state increases from aluminium to thallium and the stability of +3 oxidation state decrease from aluminium ...
CHEMISTRY NOTES – CHAPTERS 20 AND 21
... Are electrolytes (are ionic in nature) React with many metals to produce hydrogen gas (single replacement reaction) ...
... Are electrolytes (are ionic in nature) React with many metals to produce hydrogen gas (single replacement reaction) ...
Section 3.2 Atoms and Compounds
... • A given compound always contains the same proportion by mass of the elements of which it is composed. A mixture can have variable composition but the composition of a compound is fixed Does this give us a clue about the nature of matter? ...
... • A given compound always contains the same proportion by mass of the elements of which it is composed. A mixture can have variable composition but the composition of a compound is fixed Does this give us a clue about the nature of matter? ...
The Major Classes of Chemical Reactions
... do not conduct an electric current, these substances are called nonelectrolytes. Many other covalent substances, such as benzene (C6H6) and octane (C8H18), do not contain polar bonds, and these substances do not dissolve appreciably in water. A small, but very important, group of H-containing covale ...
... do not conduct an electric current, these substances are called nonelectrolytes. Many other covalent substances, such as benzene (C6H6) and octane (C8H18), do not contain polar bonds, and these substances do not dissolve appreciably in water. A small, but very important, group of H-containing covale ...
Final competitions (29.03.2008) Competing equilibria Complex
... After inserting [C2O42-] = 5.10-5 M (from problem a.), one obtains: X = 0.43. This denotes that only 43 % of Fe(III) ions present in the solution exist as complexes with the maximal number of oxalate ligands. d. Sodium oxalate is not suitable for separation Fe(III) as complexes, because Fe(OH)3 prec ...
... After inserting [C2O42-] = 5.10-5 M (from problem a.), one obtains: X = 0.43. This denotes that only 43 % of Fe(III) ions present in the solution exist as complexes with the maximal number of oxalate ligands. d. Sodium oxalate is not suitable for separation Fe(III) as complexes, because Fe(OH)3 prec ...
Paper
... spin-spin interaction with rab the distance between the two Cu2+ ions, Jpd is a pseudo-dipolar term which might originate from exchange anisotropy [2]. For copper pairs in CaO a surprisingly small value of Jpd = -28610-4 cm-1 was obtained from the measured value of Ja = (466 3)10-4 cm-1 and cal ...
... spin-spin interaction with rab the distance between the two Cu2+ ions, Jpd is a pseudo-dipolar term which might originate from exchange anisotropy [2]. For copper pairs in CaO a surprisingly small value of Jpd = -28610-4 cm-1 was obtained from the measured value of Ja = (466 3)10-4 cm-1 and cal ...
Practice Test 3
... A solution is an example of one. Solute particles will settle out. Milk is an example. Dissociates completely into ions in solution. Individual parts can be seen with the naked eye. More dissolved solute is present than theoretically possible. Conducts electricity by movement of neutrons. More solut ...
... A solution is an example of one. Solute particles will settle out. Milk is an example. Dissociates completely into ions in solution. Individual parts can be seen with the naked eye. More dissolved solute is present than theoretically possible. Conducts electricity by movement of neutrons. More solut ...
ELECTROLYTE CONDUCTANCE
... For NH4OH electrolyte: v+ = 1 and v- = 1 Since 1NH4+ ion present for each OH- ion present in solution. Example 4 For K4Fe(CN)6 electrolyte: v+ = 4 and v- = 1 Since there are 4K+ ions present for each Fe(CN)4-6 ion present in solution. ...
... For NH4OH electrolyte: v+ = 1 and v- = 1 Since 1NH4+ ion present for each OH- ion present in solution. Example 4 For K4Fe(CN)6 electrolyte: v+ = 4 and v- = 1 Since there are 4K+ ions present for each Fe(CN)4-6 ion present in solution. ...
Final Review Answers
... How does each of the following affect the solubility of (a) a solid dissolved in a liquid, and (b) a gas dissolved in a liquid. a. an increase in temperature (a) more collisions between particles causing an increase in dissolving particles (b) decreases solubility, as T increases more dissolved gas ...
... How does each of the following affect the solubility of (a) a solid dissolved in a liquid, and (b) a gas dissolved in a liquid. a. an increase in temperature (a) more collisions between particles causing an increase in dissolving particles (b) decreases solubility, as T increases more dissolved gas ...
Answer Sheet to Review Questions
... 31. Fluorine has a higher electronegativity value than iodine and therefore has a greater pull on the shared electrons causing the bond to be more polar. 32. Sulfur (S) 33. It is a symmetrical molecule 34. The electronegativity values of C and O are different and produce a polar bond, while the two ...
... 31. Fluorine has a higher electronegativity value than iodine and therefore has a greater pull on the shared electrons causing the bond to be more polar. 32. Sulfur (S) 33. It is a symmetrical molecule 34. The electronegativity values of C and O are different and produce a polar bond, while the two ...
File
... NaOH solution. Because NaOH is a strong base and is soluble in water, all of the dissolved NaOH will be dissociated, so [OH−] will be equal to the calculated concentration of the NaOH. Third, use Kw to calculate the [H+] in the solution. Lastly, calculate the pH. ...
... NaOH solution. Because NaOH is a strong base and is soluble in water, all of the dissolved NaOH will be dissociated, so [OH−] will be equal to the calculated concentration of the NaOH. Third, use Kw to calculate the [H+] in the solution. Lastly, calculate the pH. ...
Ionic compound
In chemistry, an ionic compound is a chemical compound in which ions are held together in a structure by electrostatic forces termed ionic bonds. The positively charged ions are called cations and the negatively charged ions are called anions. These can be simple ions such as the sodium (Na+) and chloride (Cl−) in sodium chloride, or polyatomic species such as the carbonate ion (CO32−) in calcium carbonate. Individual ions within an ionic compound usually have multiple nearest neighbours, so are not considered to be part of molecules, but instead part of a continuous three-dimensional network, usually in a crystalline structure.Ionic compounds typically have high melting and boiling points, and are hard and brittle. As solids they are almost always electrically insulating, but when melted or dissolved they become highly conductive, because the ions are mobilized.Ionic compounds without the acidic hydrogen ion (H+), or the basic ions hydroxide (OH−) or oxide (O2−), are also known as salts and can be formed by acid-base reactions. Ionic compounds containing hydrogen ions are classified as acids and compounds containing hydroxide or oxide ions are classified as bases.