5073 Chemistry IGCSE ordinary level for 2016
... particle of matter. It translates to mean something that is indivisible. In the eighteenth century, chemist, John Dalton, revived the term when he suggested that each element was made up of unique atoms and the atoms of an element are all the same. At that time, there were about 35 known elements. T ...
... particle of matter. It translates to mean something that is indivisible. In the eighteenth century, chemist, John Dalton, revived the term when he suggested that each element was made up of unique atoms and the atoms of an element are all the same. At that time, there were about 35 known elements. T ...
Matter – Properties and Changes 1 Intensive properties
... Ability of a substance to combine with or change into 1 or more substances AKA: chemical reaction – o new substance formed in the reaction that has different composition and properties from the original o Crushing grapes physical change ...
... Ability of a substance to combine with or change into 1 or more substances AKA: chemical reaction – o new substance formed in the reaction that has different composition and properties from the original o Crushing grapes physical change ...
File
... b. No new atoms may appear in the products that were not present in the reactants c. Chemical reactions must therefore be balanced, having same kinds and numbers of atoms on both sides of the yields sign () B. The Meaning of a Chemical Reaction 1. Physical States a. Solid - (s) b. Liquid - (l) c. G ...
... b. No new atoms may appear in the products that were not present in the reactants c. Chemical reactions must therefore be balanced, having same kinds and numbers of atoms on both sides of the yields sign () B. The Meaning of a Chemical Reaction 1. Physical States a. Solid - (s) b. Liquid - (l) c. G ...
4 ppt
... Simplest HC molecule = methane 1 carbon bound to 4 H atoms non-polar not soluble in H2O hydrophobic stable very little attraction between molecules a gas at room temperature ...
... Simplest HC molecule = methane 1 carbon bound to 4 H atoms non-polar not soluble in H2O hydrophobic stable very little attraction between molecules a gas at room temperature ...
chapter 1 - College Test bank - get test bank and solution manual
... liquid gasoline is converted to heat and gases. Another constructive example is the burning of coal to heat water into steam, which is then used to turn a turbine and produce electricity. The combustion of coal results in a flame plus other gases. The above two examples are examples of chemical chan ...
... liquid gasoline is converted to heat and gases. Another constructive example is the burning of coal to heat water into steam, which is then used to turn a turbine and produce electricity. The combustion of coal results in a flame plus other gases. The above two examples are examples of chemical chan ...
Carefully detach the last page. It is the Data Sheet.
... Which of the following statements accounts for the water of hydration. The remaining solid weighed observation that the molar volume of C2H6(g) is smaller ...
... Which of the following statements accounts for the water of hydration. The remaining solid weighed observation that the molar volume of C2H6(g) is smaller ...
Key Words Electronic Homework Problems Questions and Problems
... What do you think are the minimum conditions (for example, number of atoms and types of orbitals) for forming a delocalized molecular orbital? 10.62 In Chapter 9 we saw that the resonance concept is useful for dealing with species such as the benzene molecule and the carbonate ion. How does molecula ...
... What do you think are the minimum conditions (for example, number of atoms and types of orbitals) for forming a delocalized molecular orbital? 10.62 In Chapter 9 we saw that the resonance concept is useful for dealing with species such as the benzene molecule and the carbonate ion. How does molecula ...
Name chemistry Unit 8 worksheet 1. Why do
... Step 2: Slow CHCl3(g) + Cl(g) CCl3(g) + HCl(g) Step 3: Fast CCl3(g) + Cl(g) CCl4(g) Overall reaction: CHCl3(g) + Cl2(g) CCl4(g) + HCl(g) (a) Which of the steps in the rate determining step? Step 2 (b) Write the rate expression for the rate determining step. Rate = k[CHCl3][Cl] ...
... Step 2: Slow CHCl3(g) + Cl(g) CCl3(g) + HCl(g) Step 3: Fast CCl3(g) + Cl(g) CCl4(g) Overall reaction: CHCl3(g) + Cl2(g) CCl4(g) + HCl(g) (a) Which of the steps in the rate determining step? Step 2 (b) Write the rate expression for the rate determining step. Rate = k[CHCl3][Cl] ...
A Floral Fragrance, Methyl Benzoate
... Isolation and Purification Cool the solution to room temperature, then decant it into a separatory funnel containing 25 mL of water, and rinse the flask with 25 mL of diethyl ether (use wet ether found in a supply bottle in each hood). Add this ether to the separatory funnel, shake thoroughly, and ...
... Isolation and Purification Cool the solution to room temperature, then decant it into a separatory funnel containing 25 mL of water, and rinse the flask with 25 mL of diethyl ether (use wet ether found in a supply bottle in each hood). Add this ether to the separatory funnel, shake thoroughly, and ...
Chapter 14 Applying Neutralizaton Titrations
... Several excellent primary standards are available for the standardization of bases. Potassium hydrogen phthalate (KHC8H4O4) is an ideal primary standard. It is a nonhygroscopic crystalline solid with a high molar mass (204.2 g/mol). For most purposes, the commercial analytical-grade salt can be used ...
... Several excellent primary standards are available for the standardization of bases. Potassium hydrogen phthalate (KHC8H4O4) is an ideal primary standard. It is a nonhygroscopic crystalline solid with a high molar mass (204.2 g/mol). For most purposes, the commercial analytical-grade salt can be used ...
Organic Macromolecules Lecture
... • A specific configuration of atoms commonly attached to C-skeletons, usually involved in chemical reactions • Behave consistently from one organic molecule to the next • Contribute to distinctive properties of organic molecules • Most molecules have two or more ...
... • A specific configuration of atoms commonly attached to C-skeletons, usually involved in chemical reactions • Behave consistently from one organic molecule to the next • Contribute to distinctive properties of organic molecules • Most molecules have two or more ...
pyrene on Au(111) - American Chemical Society
... formed if the 2D enantiomers phase segregate; however, the entire surface will not be stereoselective unless one enantiomeric domain is somehow favored over the other. Scanning tunneling microscopy (STM) has been used to characterize chiral structures on surfaces produced by organic adsorbates. Race ...
... formed if the 2D enantiomers phase segregate; however, the entire surface will not be stereoselective unless one enantiomeric domain is somehow favored over the other. Scanning tunneling microscopy (STM) has been used to characterize chiral structures on surfaces produced by organic adsorbates. Race ...
Chemical Composition Notes
... OXIDATION NUMBERS __________________ – a number assigned to an atom in a molecular compound or ion that indicates the general distribution of electrons among the bonded atoms Rules in Assigning Oxidation Numbers Oxidation Number of Pure Element = Binary Molecular Compound Less electronegative atom = ...
... OXIDATION NUMBERS __________________ – a number assigned to an atom in a molecular compound or ion that indicates the general distribution of electrons among the bonded atoms Rules in Assigning Oxidation Numbers Oxidation Number of Pure Element = Binary Molecular Compound Less electronegative atom = ...
course structure
... Introduction to spectral energy domains and measurement of spectra, Implications of discrete energy levels, Population of States – Boltzman Distribution, Interaction of radiation with matter, origin of linewidths in molecular spectra, Transition dipole moment, Molecular electronic spectra, Electroni ...
... Introduction to spectral energy domains and measurement of spectra, Implications of discrete energy levels, Population of States – Boltzman Distribution, Interaction of radiation with matter, origin of linewidths in molecular spectra, Transition dipole moment, Molecular electronic spectra, Electroni ...
12.1 Alcohols: Structure and Physical Properties
... • Primary alcohols usually oxidize to carboxylic acids • With some care (using CrO3 as the reagent) an aldehyde may be obtained ...
... • Primary alcohols usually oxidize to carboxylic acids • With some care (using CrO3 as the reagent) an aldehyde may be obtained ...
The secondary structure of guide RNA molecules
... 1,2). Guide RNAs have been suggested to provide the information during the editing reaction based on the observation that their primary nucleotide sequence has base complementarity to domains of the final mRNA sequence. This gRNA dependency of the editing reaction has recently been confirmed in vitr ...
... 1,2). Guide RNAs have been suggested to provide the information during the editing reaction based on the observation that their primary nucleotide sequence has base complementarity to domains of the final mRNA sequence. This gRNA dependency of the editing reaction has recently been confirmed in vitr ...
Fundamentals of Chemistry
... • Group I has 1 valence electron, which makes it easy to loose that electron. Group VIIA has seven valence electrons and it only needs to gain one electron to become stable. • The more stable the resulting molecules are, the more likely these molecules are to form. • For example, an atom that "needs ...
... • Group I has 1 valence electron, which makes it easy to loose that electron. Group VIIA has seven valence electrons and it only needs to gain one electron to become stable. • The more stable the resulting molecules are, the more likely these molecules are to form. • For example, an atom that "needs ...
CHEMISTRY COURSEWORK
... A. Collision Theory, Factors That Affect Rate of Reaction, Heat of Reaction, Exothermic Reactions, Endothermic Reactions, Using Table I, Energy of Formation, Spontaneous Reactions, Free Energy Change, Equilibrium, LeChatelier’s Principle, Common Ion Effect, Reactions Go to Completion. Homework QUIZ ...
... A. Collision Theory, Factors That Affect Rate of Reaction, Heat of Reaction, Exothermic Reactions, Endothermic Reactions, Using Table I, Energy of Formation, Spontaneous Reactions, Free Energy Change, Equilibrium, LeChatelier’s Principle, Common Ion Effect, Reactions Go to Completion. Homework QUIZ ...
Chapter 14
... Chapter 14 Homework Solutions for Moore Problems # – 14, 18, 20, 24, 25, 28, 31, 33, 38 14. Strategy and Explanation: For the expression of the equilibrium constant, use this form: KC = [products]/[reactants]; if a stoichiometric coefficient precedes a species, that number is used as the mathematica ...
... Chapter 14 Homework Solutions for Moore Problems # – 14, 18, 20, 24, 25, 28, 31, 33, 38 14. Strategy and Explanation: For the expression of the equilibrium constant, use this form: KC = [products]/[reactants]; if a stoichiometric coefficient precedes a species, that number is used as the mathematica ...