Remember Question words
... CaO + CO2 (DECOMPOSITION) 2NaOH + H2CO3 Na2CO3 + 2H2O (DOUBLE REPLACEMENT) Zn + CuSO4 ZnSO4 + Cu (SINGLE REPLACEMENT) SO3 + H2O H2SO4 (SYNTHESIS) ...
... CaO + CO2 (DECOMPOSITION) 2NaOH + H2CO3 Na2CO3 + 2H2O (DOUBLE REPLACEMENT) Zn + CuSO4 ZnSO4 + Cu (SINGLE REPLACEMENT) SO3 + H2O H2SO4 (SYNTHESIS) ...
Quiz 3 Solution
... Two flat plates with charge density σ = +5nC/m2 and −σ = −5nC/m2 , respectively, lie parallel to the xy plane, separated by a distance d = 2 cm. An electron (charge −1.6 × 10−19 C, mass 9.11 × 10−31 kg) enters the plates at height d/2 = 1 cm moving in the positive ŷ direction with speed 106 m/s. Wh ...
... Two flat plates with charge density σ = +5nC/m2 and −σ = −5nC/m2 , respectively, lie parallel to the xy plane, separated by a distance d = 2 cm. An electron (charge −1.6 × 10−19 C, mass 9.11 × 10−31 kg) enters the plates at height d/2 = 1 cm moving in the positive ŷ direction with speed 106 m/s. Wh ...
Science 9 Unit 2
... Substances that go into a chemical reaction are the reactants and the products During a chemical reaction the reactants are used up During a chemical reaction the products are created or produced Law of conservation of mass states that in a chemical change the total mass of the new substance is the ...
... Substances that go into a chemical reaction are the reactants and the products During a chemical reaction the reactants are used up During a chemical reaction the products are created or produced Law of conservation of mass states that in a chemical change the total mass of the new substance is the ...
PS7aChemistryReviewRevised
... Elements cannot be separated into anything simpler by human means – only smaller particles with the same characteristics! Compounds and mixtures can be separated into simpler components. Mixtures show the characteristics of the substances that they contain…not a new set of characteristics…they are r ...
... Elements cannot be separated into anything simpler by human means – only smaller particles with the same characteristics! Compounds and mixtures can be separated into simpler components. Mixtures show the characteristics of the substances that they contain…not a new set of characteristics…they are r ...
Chemical equilibrium, redox and pE
... spontaneous change diffusion of a solute from high concentration to low concentration, or a gas from high pressure to low pressure • A system undergoing spontaneous change is moving to a greater degree of disorder ...
... spontaneous change diffusion of a solute from high concentration to low concentration, or a gas from high pressure to low pressure • A system undergoing spontaneous change is moving to a greater degree of disorder ...
Chap 2.1 Notes - Nature of Matter
... Elements – are pure substances whose atoms all have the same number of protons. The atomic number of an element is equal to the number of protons in its atoms. The atomic mass of an element is a sum of the protons and neutrons in the nucleus of the atoms of that element. Some elements have isotopes ...
... Elements – are pure substances whose atoms all have the same number of protons. The atomic number of an element is equal to the number of protons in its atoms. The atomic mass of an element is a sum of the protons and neutrons in the nucleus of the atoms of that element. Some elements have isotopes ...
An Introduction to Redox
... For monatomic ions, such as Mg2+, O2‐ the ON = the ion charge The sum of ON values for atoms in a molecule or formula unit = 0 ...
... For monatomic ions, such as Mg2+, O2‐ the ON = the ion charge The sum of ON values for atoms in a molecule or formula unit = 0 ...
Gizmos: Types of Reactions
... Introduction: Chemical equations show how compounds and elements react with one another. An element is a substance consisting of one kind of atom, such as aluminum (Al) or oxygen gas (O2). A compound is a substance made of more than one kind of atom, such as water (H2O) or table salt (NaCl). Questio ...
... Introduction: Chemical equations show how compounds and elements react with one another. An element is a substance consisting of one kind of atom, such as aluminum (Al) or oxygen gas (O2). A compound is a substance made of more than one kind of atom, such as water (H2O) or table salt (NaCl). Questio ...
Chemical Reactions
... The ___________ of which a new substances forms is called the ___________ of __________________. Different chemical substances will produce _______________ at _________________ rates. Factor that affects rate of reaction Temperature ...
... The ___________ of which a new substances forms is called the ___________ of __________________. Different chemical substances will produce _______________ at _________________ rates. Factor that affects rate of reaction Temperature ...
10 TEST 2 (of 3)
... (b) Hess’s Law: The change in ______________ for a stepwise process is the sum of the changes of the steps. ...
... (b) Hess’s Law: The change in ______________ for a stepwise process is the sum of the changes of the steps. ...
CH 4: Chemical Reactions
... • When doing a titration you add titrant (standard solution) to the analyte (unknown concentration solution) until the endpoint or the equivalence point is reached. This point is when you have equal moles of titrant and analyte, from the volume of the titrant and analyte used and the molarity of the ...
... • When doing a titration you add titrant (standard solution) to the analyte (unknown concentration solution) until the endpoint or the equivalence point is reached. This point is when you have equal moles of titrant and analyte, from the volume of the titrant and analyte used and the molarity of the ...
Chapter 14, Section 1, pages 494-501
... A chemical equilibrium is a state of balance between the forward and reverse reactions. The concentration of products and reactants remains unchanged. H2 + I2 <--------------> 2HI See fig. 3, pg. 498 Chemical Equilibria Are Dynamic (Leaky boat) Demo-pg. 500 Static equilibrium is a state when nothing ...
... A chemical equilibrium is a state of balance between the forward and reverse reactions. The concentration of products and reactants remains unchanged. H2 + I2 <--------------> 2HI See fig. 3, pg. 498 Chemical Equilibria Are Dynamic (Leaky boat) Demo-pg. 500 Static equilibrium is a state when nothing ...
Chapter 11 Review sheet Name
... reaction. If the change is caused by heat supplied to the reaction, the Greek symbol (9) is often written above the "yields" symbol in the equation. A chemical change in which a free element replaces and releases another element in a compound is called a(n) (10) reaction. A chemical change in which ...
... reaction. If the change is caused by heat supplied to the reaction, the Greek symbol (9) is often written above the "yields" symbol in the equation. A chemical change in which a free element replaces and releases another element in a compound is called a(n) (10) reaction. A chemical change in which ...
Chemical Reactions Chemical Arithmetic
... Oxidation-Reduction Reactions • Oxidation-Reduction (Redox) Reaction- A chemical reaction in which the oxidation numbers of elements change because of a loss or gain of electrons • Oxidation Number- A number that indicates the charge that an atom in a molecule or polyatomic ion would have if all bon ...
... Oxidation-Reduction Reactions • Oxidation-Reduction (Redox) Reaction- A chemical reaction in which the oxidation numbers of elements change because of a loss or gain of electrons • Oxidation Number- A number that indicates the charge that an atom in a molecule or polyatomic ion would have if all bon ...
Today Electrochemistry electrons moving about equilibrium with a
... electrons are moving from the Na to the water! start with Na metal end up with Na ions! start with H2O end up with H2 + OH-! ...
... electrons are moving from the Na to the water! start with Na metal end up with Na ions! start with H2O end up with H2 + OH-! ...
Electrochemistry
... How to draw a Galvanic Cell The oxidation reaction occurs at the anode. The reduction reaction occurs at the cathode. You will be give the unbalanced net ionic reaction or a list of the substances present (line notation). From the information given you need to decide what half reactions occur in ea ...
... How to draw a Galvanic Cell The oxidation reaction occurs at the anode. The reduction reaction occurs at the cathode. You will be give the unbalanced net ionic reaction or a list of the substances present (line notation). From the information given you need to decide what half reactions occur in ea ...
1 Lecture 11. Redox Chemistry Many elements in the periodic table
... Electron activities are usually expressed on either the pE or Eh scales as shown below. pE = - log (e-) = 1/n [logK - log (Red)/(Ox)] or Eh = 2.3 RT pE / F The pE provides a non-dimensional scale (like pH) that expresses the activity of electrons in factors of 10. Eh, called the redox potential, is ...
... Electron activities are usually expressed on either the pE or Eh scales as shown below. pE = - log (e-) = 1/n [logK - log (Red)/(Ox)] or Eh = 2.3 RT pE / F The pE provides a non-dimensional scale (like pH) that expresses the activity of electrons in factors of 10. Eh, called the redox potential, is ...
Chapter 3
... Once again, charges MUST be observed when recombining and formulas are written with cation first. Reaction only happens if one of the two products is Insoluble (s). LEP #14 a, b ...
... Once again, charges MUST be observed when recombining and formulas are written with cation first. Reaction only happens if one of the two products is Insoluble (s). LEP #14 a, b ...
unit 4 review sheet
... the sum of these coefficients? g. When “c” is correctly balanced using the smallest whole number coefficients, what is the coefficient for HCl? h. When “d” is correctly balanced using the smallest whole number coefficients, what is the sum of these coefficients? i. When “e” is correctly balanced usi ...
... the sum of these coefficients? g. When “c” is correctly balanced using the smallest whole number coefficients, what is the coefficient for HCl? h. When “d” is correctly balanced using the smallest whole number coefficients, what is the sum of these coefficients? i. When “e” is correctly balanced usi ...
AP Chemistry Note Outline
... 6. Cancel out any extra water and OH7. Balance Charge with e8. Multiply reactions by factors such that the e- cancel Add both ½ reactions ...
... 6. Cancel out any extra water and OH7. Balance Charge with e8. Multiply reactions by factors such that the e- cancel Add both ½ reactions ...
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.