C7 Revision Notes 2015
... Organic molecules and functional groups •Organic chemistry is the study of carbon-based compounds. •Organic chemistry covers most fuels, plastics and synthetic fibers, as well as drugs and various classes of biomolecules. •Organic molecules are grouped into a number of classes. •The best-known are ...
... Organic molecules and functional groups •Organic chemistry is the study of carbon-based compounds. •Organic chemistry covers most fuels, plastics and synthetic fibers, as well as drugs and various classes of biomolecules. •Organic molecules are grouped into a number of classes. •The best-known are ...
2013 Chemistry examination report
... Options B, C and D were all inconsistent with the conditions for hydrogen bonding. Reduction and oxidation can both be defined in terms of the transfer of oxygen, hydrogen and electrons as well as changes in oxidation number. Reduction is defined as gain of electrons decrease in oxidation number ...
... Options B, C and D were all inconsistent with the conditions for hydrogen bonding. Reduction and oxidation can both be defined in terms of the transfer of oxygen, hydrogen and electrons as well as changes in oxidation number. Reduction is defined as gain of electrons decrease in oxidation number ...
Honors Chemistry Unit 4 Student Packet: Honors Chemistry Problem
... 1. In an equation, a substance is shown to be in the gaseous state by placing an upwardpointing arrow after its formula. 2. The symbol ∆ placed over the arrow in an equation means that heat is supplied to the reaction. 3. Atoms are destroyed in a chemical reaction. 4. A skeleton equation is not a ba ...
... 1. In an equation, a substance is shown to be in the gaseous state by placing an upwardpointing arrow after its formula. 2. The symbol ∆ placed over the arrow in an equation means that heat is supplied to the reaction. 3. Atoms are destroyed in a chemical reaction. 4. A skeleton equation is not a ba ...
Revised Higher 2014 Paper
... (ii) A student wanted to calculate the enthalpy change when 1 gram of sherbet is added to a small beaker of water. State the measurements the student should make. ...
... (ii) A student wanted to calculate the enthalpy change when 1 gram of sherbet is added to a small beaker of water. State the measurements the student should make. ...
BIOC203W1_Lecture Slides_Enzymes
... A catalyst either INCREASES or DECREASES the rate or velocity of a chemical reaction in both forward and backward directions. A catalyst may be temporarily changed during the reaction, but it is remain UNCHANGED in the overall process. Most biological catalysts are enzymes and they also regulate the ...
... A catalyst either INCREASES or DECREASES the rate or velocity of a chemical reaction in both forward and backward directions. A catalyst may be temporarily changed during the reaction, but it is remain UNCHANGED in the overall process. Most biological catalysts are enzymes and they also regulate the ...
unit 4: chemical reaction rates
... Scientists discovered that by simply determining the mass of the substance, it was possible to count particles or atoms. A mole (mol) is the amount of a pure substance that contains the same amount of chemical units as there are atoms in exactly 12 grams of carbon, namely 12. In order to avoid confu ...
... Scientists discovered that by simply determining the mass of the substance, it was possible to count particles or atoms. A mole (mol) is the amount of a pure substance that contains the same amount of chemical units as there are atoms in exactly 12 grams of carbon, namely 12. In order to avoid confu ...
PowerPoint Chapter 8
... Base • Weak Base = due to a reversible reaction with water, generates significantly less than one OH− for each formula unit of base added to water. – Ammonia and ionic compounds that contain CO32− or HCO3− are weak bases. ...
... Base • Weak Base = due to a reversible reaction with water, generates significantly less than one OH− for each formula unit of base added to water. – Ammonia and ionic compounds that contain CO32− or HCO3− are weak bases. ...
No Slide Title
... The combustion reaction for a substance is defined as the reaction of one mole of a single substance with O2(g) to form combustion products. Because of the way in which we have defined the combustion reaction we may have to use fractional coefficients for some of the reactants and products. The enth ...
... The combustion reaction for a substance is defined as the reaction of one mole of a single substance with O2(g) to form combustion products. Because of the way in which we have defined the combustion reaction we may have to use fractional coefficients for some of the reactants and products. The enth ...
Chemistry
... (iii) Base dissociation constants, Kb (iv) The ionic product of water, Kw (v) pH: choice of indicators (vi) Buffer solutions Learning Outcomes Candidates should be able to: (a) explain, in terms of rates of the forward and reverse reactions, what is meant by a reversible reaction and dynamic equilib ...
... (iii) Base dissociation constants, Kb (iv) The ionic product of water, Kw (v) pH: choice of indicators (vi) Buffer solutions Learning Outcomes Candidates should be able to: (a) explain, in terms of rates of the forward and reverse reactions, what is meant by a reversible reaction and dynamic equilib ...
Qsp Ksp Qsp > Ksp
... Assigning Oxidation numbers c. Oxidation number is 0 for atoms in an element. d.The sum of all oxidation numbers in a molecule or ion must add up to the total charge. e. In compounds, alkalis (group 1) have oxidation number +1; alkaline earths (group 2) have oxidation number +2. f. In compounds, flu ...
... Assigning Oxidation numbers c. Oxidation number is 0 for atoms in an element. d.The sum of all oxidation numbers in a molecule or ion must add up to the total charge. e. In compounds, alkalis (group 1) have oxidation number +1; alkaline earths (group 2) have oxidation number +2. f. In compounds, flu ...
CHEMISTRY / ELECTROCHEMISTRY OF THE SULPHUR
... have considered what chemical reactions are actually responsible for the tarnish mechanisms, a slightly large number having been content to reduce the process, whatever its chemistry, to an empirical parametric equation. To the extent that mechanisms or rate-determining steps have been proposed, the ...
... have considered what chemical reactions are actually responsible for the tarnish mechanisms, a slightly large number having been content to reduce the process, whatever its chemistry, to an empirical parametric equation. To the extent that mechanisms or rate-determining steps have been proposed, the ...
Chemistry II Exams and Keys 2014 Season
... Which of the above reagents has the highest molar concentration? A. acetic acid B. hydrochloric acid C. nitric acid D. perchloric acid 6. A bomb calorimeter is calibrated by combusting 1.558 g of benzoic acid (MW = 122.2 g/mol) in the chamber. The temperature of the water is increased by 2.34 K. The ...
... Which of the above reagents has the highest molar concentration? A. acetic acid B. hydrochloric acid C. nitric acid D. perchloric acid 6. A bomb calorimeter is calibrated by combusting 1.558 g of benzoic acid (MW = 122.2 g/mol) in the chamber. The temperature of the water is increased by 2.34 K. The ...
Review Chapters 4-6 problems Chem 105 Final Sp07
... Write a net ionic equation for the reaction of aqueous acetic acid and aqueous potassium hydroxide. a. CH3CO2H(aq) + KOH(aq) K+(aq) + CH3CO2-(aq) + H2O() b. CH3CO2H(aq) + KOH(aq) KCH3CO2(aq) + H2O() c. H+(aq) + OH-(aq) H2O() d. CH3CO2H(aq) + OH-(aq) CH3CO3H2-(aq) e. CH3CO2H(aq) + OH-(aq) ...
... Write a net ionic equation for the reaction of aqueous acetic acid and aqueous potassium hydroxide. a. CH3CO2H(aq) + KOH(aq) K+(aq) + CH3CO2-(aq) + H2O() b. CH3CO2H(aq) + KOH(aq) KCH3CO2(aq) + H2O() c. H+(aq) + OH-(aq) H2O() d. CH3CO2H(aq) + OH-(aq) CH3CO3H2-(aq) e. CH3CO2H(aq) + OH-(aq) ...
Worksheet answers
... acids ionize in water to form H+ ions more precisely, the H from the acid molecule is donated to a water molecule to form hydronium ion, H3O+. A proton (H+) cannot exist on its own in water! bases dissociate in water to form OH ions bases, such as NH3, that do not contain OH ions, produce OH by p ...
... acids ionize in water to form H+ ions more precisely, the H from the acid molecule is donated to a water molecule to form hydronium ion, H3O+. A proton (H+) cannot exist on its own in water! bases dissociate in water to form OH ions bases, such as NH3, that do not contain OH ions, produce OH by p ...
Catalysis
Catalysis is the increase in the rate of a chemical reaction due to the participation of an additional substance called a catalyst. With a catalyst, reactions occur faster and require less activation energy. Because catalysts are not consumed in the catalyzed reaction, they can continue to catalyze the reaction of further quantities of reactant. Often only tiny amounts are required.