Chemical Reactions and Equations
... Starting with elements that only occur in one substance on each side of the equation, make sure that each side of the equation has an equal # of that element. Proceed with all elements. Remember that changing the # of one element may alter elements that have already been ...
... Starting with elements that only occur in one substance on each side of the equation, make sure that each side of the equation has an equal # of that element. Proceed with all elements. Remember that changing the # of one element may alter elements that have already been ...
Why worry about pH
... that measures neutral (7.0) on the pH scale has an equal number of hydrogen ions and hydroxyl ions. Water that is low in pH has more hydrogen ions than hydroxyl ions. Though the major cause of acidic well water is the high amount of dissolved carbon dioxide gas (carbonic acid when combined with wate ...
... that measures neutral (7.0) on the pH scale has an equal number of hydrogen ions and hydroxyl ions. Water that is low in pH has more hydrogen ions than hydroxyl ions. Though the major cause of acidic well water is the high amount of dissolved carbon dioxide gas (carbonic acid when combined with wate ...
CST REVIEW Percent Error 1. 2. What is the formula for density?
... Acids and Bases 141. Describe how acids and bases each taste. 142. What color do acids and bases each turn litmus paper? 143. What is produced when an acid reacts with a base? 144. What is produced when an acid reacts with a metal? 145. According to Arrhenius, what kind of ions does acids and bases ...
... Acids and Bases 141. Describe how acids and bases each taste. 142. What color do acids and bases each turn litmus paper? 143. What is produced when an acid reacts with a base? 144. What is produced when an acid reacts with a metal? 145. According to Arrhenius, what kind of ions does acids and bases ...
WEEK 6
... We earlier defined salts as compounds formed between a positive ion other than H+ and a negative ion other than OH-. In pure form salts usually exist as crystalline solids at room temperature. Salts are ionic substance. Those that dissolve in water dissociate into positive and negative ions. Classif ...
... We earlier defined salts as compounds formed between a positive ion other than H+ and a negative ion other than OH-. In pure form salts usually exist as crystalline solids at room temperature. Salts are ionic substance. Those that dissolve in water dissociate into positive and negative ions. Classif ...
Lecture 11 - U of L Class Index
... smallest reduction potential (in magnitude). This difference is due to solvation (hydration). As discussed in the section on acid/base properties, the electrostatic parameter for Li is high (ξ = Z2/r) because of its very small radius. This gives it a high energy of hydration, and it is this term in ...
... smallest reduction potential (in magnitude). This difference is due to solvation (hydration). As discussed in the section on acid/base properties, the electrostatic parameter for Li is high (ξ = Z2/r) because of its very small radius. This gives it a high energy of hydration, and it is this term in ...
CH. 15 Notes
... to the right of the chemical symbols are called Subscripts, and notes the number of atoms of that element. A number in front of a chemical formula is a coefficient and it is multiplied by the subscript of all the atoms that are in the formula ...
... to the right of the chemical symbols are called Subscripts, and notes the number of atoms of that element. A number in front of a chemical formula is a coefficient and it is multiplied by the subscript of all the atoms that are in the formula ...
Chapter 13 notes
... 2. Ionization = The formation of that occurs when a compound dissolves in water (water rips aparts molecules and turns them into ions Ionization example: H2O + HCl When a hydrogen chloride molecule ionizes in water, its hydrogen ion bonds covalently to a water molecule. A ion and a ion are formed. ...
... 2. Ionization = The formation of that occurs when a compound dissolves in water (water rips aparts molecules and turns them into ions Ionization example: H2O + HCl When a hydrogen chloride molecule ionizes in water, its hydrogen ion bonds covalently to a water molecule. A ion and a ion are formed. ...
Measurements/Unit Cancellation/Significant Figures 1. When
... More Stoichiometry questions 41. What is the percent by mass of oxygen in Fe2O3? ...
... More Stoichiometry questions 41. What is the percent by mass of oxygen in Fe2O3? ...
Unit 6 Moles and Stoichiometry Short Answer Review
... Base your answers to questions 1 through 3 on the information below. Rust on an automobile door contains Fe 2O3(s). The balanced equation representing one of the reactions between iron in the door of the automobile and oxygen in the atmosphere is given below. 4Fe(s) + 3O 2(g) 2Fe 2O3(s) 1. Write the ...
... Base your answers to questions 1 through 3 on the information below. Rust on an automobile door contains Fe 2O3(s). The balanced equation representing one of the reactions between iron in the door of the automobile and oxygen in the atmosphere is given below. 4Fe(s) + 3O 2(g) 2Fe 2O3(s) 1. Write the ...
inorganic-chemistry-gp-i-alkali-metals
... Lithium shows different properties due to its extremely small size and lesser metallic character so as it shows significance similarity to Mg and other group II , which is a general trend and can be assumed to be a general perception. Due to high reactivity they do not occur in free state in nature ...
... Lithium shows different properties due to its extremely small size and lesser metallic character so as it shows significance similarity to Mg and other group II , which is a general trend and can be assumed to be a general perception. Due to high reactivity they do not occur in free state in nature ...
GCSE_C2_Revision_+_Exam_Questions
... In an atom, the number of electrons is equal to the number of protons in the nucleus. Atoms have no overall electrical charge. All atoms of a particular element have the same number of protons. Atoms of different elements have different numbers of protons. The number of protons in an atom is called ...
... In an atom, the number of electrons is equal to the number of protons in the nucleus. Atoms have no overall electrical charge. All atoms of a particular element have the same number of protons. Atoms of different elements have different numbers of protons. The number of protons in an atom is called ...
Types of Chemical Reactions
... The ability of one metal to displace another depends on their relative ease of oxidation—a more active metal (one that is more easily oxidized) displaces a less active metal. In the first reaction above, lead is more active than copper. The relative activities of metals can be tabulated in an activi ...
... The ability of one metal to displace another depends on their relative ease of oxidation—a more active metal (one that is more easily oxidized) displaces a less active metal. In the first reaction above, lead is more active than copper. The relative activities of metals can be tabulated in an activi ...
Ionic and Covalent Compounds: Naming, Formulas, Properties 1
... The average kinetic energy of gas molecules depends only on the gas temperature, and can be expressed by E K α T. ...
... The average kinetic energy of gas molecules depends only on the gas temperature, and can be expressed by E K α T. ...
BAT
... Which reactant is the limiting reactant if there are only 1.254 grams of aluminum and 6.348 grams of copper (II) chloride available for this reaction? ...
... Which reactant is the limiting reactant if there are only 1.254 grams of aluminum and 6.348 grams of copper (II) chloride available for this reaction? ...
File
... Some water in a solution will break down into H+ and OH These will be in equal number in pure water ...
... Some water in a solution will break down into H+ and OH These will be in equal number in pure water ...
Reaction types and Stoichiometry
... 19. Which of the following is the balanced chemical equation for the reaction shown above? A Al + H2SO4 Al2(SO4)3 + H2 B 2Al + 3H2SO4 Al2(SO4)3 + 3H2 _ C 2Al + 3H2SO4 Al2(SO4)3 + H2 D 2Al + H2SO4 Al2(SO4)3 + H2 20. Which of these is the general formula for a double-replacement reaction? A B ...
... 19. Which of the following is the balanced chemical equation for the reaction shown above? A Al + H2SO4 Al2(SO4)3 + H2 B 2Al + 3H2SO4 Al2(SO4)3 + 3H2 _ C 2Al + 3H2SO4 Al2(SO4)3 + H2 D 2Al + H2SO4 Al2(SO4)3 + H2 20. Which of these is the general formula for a double-replacement reaction? A B ...
Test - Regents
... 9 What is the structure of a krypton-85 atom? (1) 49 electrons, 49 protons, and 85 neutrons (2) 49 electrons, 49 protons, and 49 neutrons (3) 36 electrons, 36 protons, and 85 neutrons (4) 36 electrons, 36 protons, and 49 neutrons ...
... 9 What is the structure of a krypton-85 atom? (1) 49 electrons, 49 protons, and 85 neutrons (2) 49 electrons, 49 protons, and 49 neutrons (3) 36 electrons, 36 protons, and 85 neutrons (4) 36 electrons, 36 protons, and 49 neutrons ...
Chemical Equations & Reactions
... Active metals displace less active metals or hydrogen from their compounds in aqueous solution. Refer to the Activity Series. a. Al + CuCl2 AlCl3 + Cu b. metal + H2O metal hydroxide + H2 Metals include the alkali metals and calcium. 2Na + 2H2O 2NaOH + H2 ...
... Active metals displace less active metals or hydrogen from their compounds in aqueous solution. Refer to the Activity Series. a. Al + CuCl2 AlCl3 + Cu b. metal + H2O metal hydroxide + H2 Metals include the alkali metals and calcium. 2Na + 2H2O 2NaOH + H2 ...
Document
... length(m), mass(kg), time(s), temperature(K), mole(mol), (electric current(A), Luminous intensity(cd)) From these seven base units, several other units are derived, which means the derived units can be defined in terms of the base units, for example, liter is derived from m3. SI prefix can be attach ...
... length(m), mass(kg), time(s), temperature(K), mole(mol), (electric current(A), Luminous intensity(cd)) From these seven base units, several other units are derived, which means the derived units can be defined in terms of the base units, for example, liter is derived from m3. SI prefix can be attach ...
Electrolysis of water
Electrolysis of water is the decomposition of water (H2O) into oxygen (O2) and hydrogen gas (H2) due to an electric current being passed through the water.This technique can be used to make hydrogen fuel (hydrogen gas) and breathable oxygen; though currently most industrial methods make hydrogen fuel from natural gas instead.