Ch 06
... electric field between them). If the molecules have enough kinetic energy, they can approach closely enough for their bond structures to rearrange to form an activated complex. The activated complex is an unstable molecule with a particular geometry. It is unstable because it possesses the maximum p ...
... electric field between them). If the molecules have enough kinetic energy, they can approach closely enough for their bond structures to rearrange to form an activated complex. The activated complex is an unstable molecule with a particular geometry. It is unstable because it possesses the maximum p ...
aq - Byron High School
... what species are present in a reaction mixture (i.e., solid, liquid, gas, aqueous solution). • If we are to understand reactivity, we must be aware of just what is changing during the course of a reaction. Aqueous Reactions ...
... what species are present in a reaction mixture (i.e., solid, liquid, gas, aqueous solution). • If we are to understand reactivity, we must be aware of just what is changing during the course of a reaction. Aqueous Reactions ...
Laboratory 3
... determined what ions are present, but it did not provide any quantitative information. A chemical equation includes quantitative information and communicates the amounts of the different substances. To get this information you must complete a quantitative test. In Part D you will perform a quantitat ...
... determined what ions are present, but it did not provide any quantitative information. A chemical equation includes quantitative information and communicates the amounts of the different substances. To get this information you must complete a quantitative test. In Part D you will perform a quantitat ...
chapter 4 review_package
... 9. Given the following balanced equations, solve the stoichiometric problems (PLO-D5) a. Ammonia combines with oxygen gas in the following reaction: 4 NH3 + 5O2 → 6H2O + 4NO i. How many moles of NH3 are needed to combine with 3.57 moles of O2 gas? ...
... 9. Given the following balanced equations, solve the stoichiometric problems (PLO-D5) a. Ammonia combines with oxygen gas in the following reaction: 4 NH3 + 5O2 → 6H2O + 4NO i. How many moles of NH3 are needed to combine with 3.57 moles of O2 gas? ...
Chemistry-Maths-Student-Guide
... Standard states are the most stable states under standard conditions, e.g. H2O(l), CO2(g), Na(s). However, note that for carbon, the most stable state is C(graphite). Solutions are aqueous and concentrations are 1 mol dm-3. ...
... Standard states are the most stable states under standard conditions, e.g. H2O(l), CO2(g), Na(s). However, note that for carbon, the most stable state is C(graphite). Solutions are aqueous and concentrations are 1 mol dm-3. ...
18-3-reading - WordPress.com
... Sometimes you need to use math skills to write a formula correctly. In the compound aluminum oxide, there are aluminum ions and oxygen ions. But, how many of each one? From the periodic table, you can get the information about aluminum and oxygen that you need to write the formula. By its place on t ...
... Sometimes you need to use math skills to write a formula correctly. In the compound aluminum oxide, there are aluminum ions and oxygen ions. But, how many of each one? From the periodic table, you can get the information about aluminum and oxygen that you need to write the formula. By its place on t ...
Mr. B`s Chemistry
... Solid ammonium carbonate is added to a saturated solution of barium hydroxide. (NH4)2CO3 + Ba2+ + 2 OH- ...
... Solid ammonium carbonate is added to a saturated solution of barium hydroxide. (NH4)2CO3 + Ba2+ + 2 OH- ...
In Class Overview of Chapter
... When sufficient heat has been transferred to the liquid, another abrupt increase in entropy is observed. This occurs when the molecules have sufficient energy to overcome the intermolecular forces; this is when the liquid starts to boil. At greater temperatures, the substance exists as a gas and fur ...
... When sufficient heat has been transferred to the liquid, another abrupt increase in entropy is observed. This occurs when the molecules have sufficient energy to overcome the intermolecular forces; this is when the liquid starts to boil. At greater temperatures, the substance exists as a gas and fur ...
HCC9 Chapter 9 Objectives and Notes
... 1. law of definite proportions/law of constant composition: Discovered by Joseph Proust in the early 1800’s. In a given chemical compound the elements are always combined in the same proportion by mass. a. H2O is always 2.02 g hydrogen for every 16.0 g oxygen, the ratio of the masses never varies. 2 ...
... 1. law of definite proportions/law of constant composition: Discovered by Joseph Proust in the early 1800’s. In a given chemical compound the elements are always combined in the same proportion by mass. a. H2O is always 2.02 g hydrogen for every 16.0 g oxygen, the ratio of the masses never varies. 2 ...
CH1 Student Revision Guides pdf
... The first graph shows that as the nuclear charge increases, the molar first ionisation energy does not increase uniformly. The second graph seems to indicate that the electrons in an atom exist in distinct energy levels. For sodium, shown above, there is one electron on its own which is the easiest ...
... The first graph shows that as the nuclear charge increases, the molar first ionisation energy does not increase uniformly. The second graph seems to indicate that the electrons in an atom exist in distinct energy levels. For sodium, shown above, there is one electron on its own which is the easiest ...
Chemistry Entrance Material for Grade 11 to 12
... 17. Experiments with many liquids lead us to the following generalization: As the ____________ increases, the vapour pressure of the liquid will always increase. Properties of the boiling point 18. At the boiling point: [-A-] Can molecules escape from the surface of a liquid to enter the gas phase a ...
... 17. Experiments with many liquids lead us to the following generalization: As the ____________ increases, the vapour pressure of the liquid will always increase. Properties of the boiling point 18. At the boiling point: [-A-] Can molecules escape from the surface of a liquid to enter the gas phase a ...
11.2 Types of Chemical Reactions
... Zn(s) Cu(NO3)2(aq) ¡ Cu(s) Zn(NO3)2(aq) These equations describe two examples of single-replacement reactions. A single-replacement reaction is a chemical change in which one element replaces a second element in a compound. You can identify a singlereplacement reaction by noting that both the re ...
... Zn(s) Cu(NO3)2(aq) ¡ Cu(s) Zn(NO3)2(aq) These equations describe two examples of single-replacement reactions. A single-replacement reaction is a chemical change in which one element replaces a second element in a compound. You can identify a singlereplacement reaction by noting that both the re ...
Lecture 7
... Aluminum oxide is amphoteric, dissolving in both acids and bases. as a base: Al2O3(s) + 6H3O+(aq) → 2Al3+(aq) + 9H2O(l) as an acid:Al2O3(s) + 2OH-(aq) + 3H2O(l) → 2Al(OH)4-(aq) Aluminum ions are acidic by hydrolysis. Al(H2O)63+(aq) + H2O(l) → Al(H2O)5OH2+(aq) + H3O+(aq) Aluminum ions precipitate wit ...
... Aluminum oxide is amphoteric, dissolving in both acids and bases. as a base: Al2O3(s) + 6H3O+(aq) → 2Al3+(aq) + 9H2O(l) as an acid:Al2O3(s) + 2OH-(aq) + 3H2O(l) → 2Al(OH)4-(aq) Aluminum ions are acidic by hydrolysis. Al(H2O)63+(aq) + H2O(l) → Al(H2O)5OH2+(aq) + H3O+(aq) Aluminum ions precipitate wit ...
Chapter 13
... chemical change in a reaction in an aq soln. – To create an ionic equation, must convert a balanced chemical equation into an ionic eq. ...
... chemical change in a reaction in an aq soln. – To create an ionic equation, must convert a balanced chemical equation into an ionic eq. ...
Term 1 and 2 Powerpoints
... • This allows you to listen and formulate questions and take your own notes rather than just copying down my outline. • If all of the class has notes ahead of time, we can spend more time on answering questions, lab work, book work and individual help rather than copying notes. ...
... • This allows you to listen and formulate questions and take your own notes rather than just copying down my outline. • If all of the class has notes ahead of time, we can spend more time on answering questions, lab work, book work and individual help rather than copying notes. ...
X PS EM - deo kadapa
... Ans:- If the number of atoms of any element in a chemical equation is not equal on both sides, then it is a skeletal equation. For example: Mg + Hcl → Mgcl2 +H2 Here, the number of chlorine and hydrogen atoms are not equal on both sides. 5. Write the skeletal equation for the following reactions. (a ...
... Ans:- If the number of atoms of any element in a chemical equation is not equal on both sides, then it is a skeletal equation. For example: Mg + Hcl → Mgcl2 +H2 Here, the number of chlorine and hydrogen atoms are not equal on both sides. 5. Write the skeletal equation for the following reactions. (a ...
FE Exam Review for Chemistry
... Uranium‐235 and uranium‐238 have the same number of: a) Neutrons b) Protons c) Electrons d) Protons and electrons ...
... Uranium‐235 and uranium‐238 have the same number of: a) Neutrons b) Protons c) Electrons d) Protons and electrons ...
Experimental skills and abilities
... 1 The evaporation process should be done very slowly. This is because sugar can easily char as it solidifies around the sides of the evaporating basin during the evaporating process. Also the crystallisation will require a lot longer for crystals to form from the concentrated solution and may need ...
... 1 The evaporation process should be done very slowly. This is because sugar can easily char as it solidifies around the sides of the evaporating basin during the evaporating process. Also the crystallisation will require a lot longer for crystals to form from the concentrated solution and may need ...
Chapter 9 (Part B)
... electrons to the plate that lost electrons. –Which way do electrons flow? –Which way does current flow? •Remember: Although electrons flow from the Zn− pole to the Cu+ pole, we say that current flows from the Cu+ pole to the Zn− pole. •Because electrons always flow from one pole to the other, it is ...
... electrons to the plate that lost electrons. –Which way do electrons flow? –Which way does current flow? •Remember: Although electrons flow from the Zn− pole to the Cu+ pole, we say that current flows from the Cu+ pole to the Zn− pole. •Because electrons always flow from one pole to the other, it is ...
Electrochemistry
Electrochemistry is the branch of physical chemistry that studies chemical reactions which take place at the interface of an electrode, usually a solid metal or a semiconductor, and an ionic conductor, the electrolyte. These reactions involve electric charges moving between the electrodes and the electrolyte (or ionic species in a solution). Thus electrochemistry deals with the interaction between electrical energy and chemical change.When a chemical reaction is caused by an externally supplied current, as in electrolysis, or if an electric current is produced by a spontaneous chemical reaction as in a battery, it is called an electrochemical reaction. Chemical reactions where electrons are transferred directly between molecules and/or atoms are called oxidation-reduction or (redox) reactions. In general, electrochemistry describes the overall reactions when individual redox reactions are separate but connected by an external electric circuit and an intervening electrolyte.