Topic 5 – Bonding and Structure Revision Notes 1) Introduction • Atoms form bonds to get a full outer shell of electrons • There are three types of bonding: ionic‚ covalent and metallic • The structures produced by forming bonds are either giant or simple • The possible combinations of structure and bonding are giant ionic‚ simple covalent‚ giant covalent and giant metallic • Simple covalent is sometimes called simple molecular • Giant covalent is sometimes called giant
Premium Covalent bond Ionic bond Chemical bond
four possible haloalkanes that can be formed from this reaction. [4 marks] [TOTAL: 25 marks] 2. C5H12 is an alkane. It can be present in three different forms of constitutional isomers. a) Name and draw the three constitutional isomers of C5H12. [6 marks] b) Describe the reaction steps of C5H12 when it reacts with Cl2 in the presence of UV light‚ giving an example for each reaction steps. [8 marks] c) One of the product that can be formed from (b) is 2‚3-dichloropentane. Draw the structure
Premium Oxygen Chemistry Atom
E Name: 1. XPERIMENT 9 IODIMETRIC TITRATION OF VITAMIN C Section: Pre-Laboratory Answer the following questions before coming to the laboratory. Give the reason for the following; Iodimetric titrations are usually performed in neutral or mildly alkaline (pH 8) to weakly acid solution. 2. Iodine solutions are prepared by dissolving I2 in a concentrated solution of potassium iodide. 3. Iodimetric determination of vitamin C is performed rapidly after preparing vitamin C solution
Premium Iodine Titration 3rd millennium
Solidified the egg Egg yolk + NaOH Solidified the egg Egg yolk + bleach Completely dissolved 3. What is the correct safety attire for this lab course? (6 pts) Students must wear lab goggles‚ lab coat‚ and correct shoes which include no open toes‚ open backs‚ or open sides. 4. What is the correct procedure to check out and check in equipment? (6 pts) Students are provided a sheet which indicates the appropriate number of items located in the drawer. Students must count the items and verify
Premium Sulfuric acid Egg yolk
bonds that don’t give or take any electrons. In stead they share the elctrons 50) Which of these compounds contain elements that do not follow the octet rule? Explain. a) NF3: 5 + (7*3) = 26 b) PCl2F3: 5 + (7*2) + (7*3) = 40 c) SF4: 6 + (7 *4) = 24 d) SCl2: 6 + (7*2) = 20 The answer is “d” because it does not have eight valence electrons. 64) Explain why each electron structure is incorrect. Replace each structure with one that is more acceptable. a) It is incorrect because neither
Premium Covalent bond Chemical bond Atom
the name arenes. They contain in their molecule one or more cycles made up from 6 carbon atoms. When the molecule is formed out of a single cycle‚ the hydrocarbons are mono nucleuses; when the molecule contains more than one cycle‚ the hydrocarbons are poly nucleuses. The simplest aromatic hydrocarbon‚ benzene‚ is compound out of just one such cycle; its formula is C6H6. The representation of benzene through a cycle of 6 carbon atoms with 3 double bounds was proposed by Kekule in 1865: In some
Premium Benzene Hydrogen
SCIENCE RATIONALE This syllabus is prepared with a view to address new trends in integrated science teaching and science teacher education. Science has gained world-wide acceptance as a course of study for various reasons such as the concern for social relevance and environmental issues. The teacher is seen‚ as the key to the success of the Educational Reform in Zambia and the effective implementation of the science curriculum will thus depend on the commitment‚ competence and resourcefulness
Premium Energy
has asked you for one favor…since she can’t let you be in the lab-she has requested that you do the calculations. Determine how much of the 18.0M H2SO4 stock solution she needs to make the new solution. b. What is the [OH-] of the solution? Box 6 What is the pOH of the diluted solution? STAMP HERE
Premium Chemistry Solution Concentration
ECOFRIENDLY WASTE PLASTICS UTILIZATION HI- TECH PLANT INTRODUCTION:- In the present age‚ there is a great treat of soil as wells air pollution caused by polythene. The disposal of plastic is a great treat for mankind .it has affected living as well as non-leaving things. To solve this problem and to save our environment from various harmful effects of polythene‚ this exhibit has been prepared. SCIENTIFIC PRINCIPALS:- This is based on the following principals:-
Free Carbon dioxide
| | Use Table 2.1 on page 29 in your textbook to answer the following questions. 6. Which substance is a colored gas? ______________________ 7. Which liquids boil at a lower temperature than water? ___________________________________________ 8. For which substances would 2 cm3 have a mass greater than 6 g? _________________________________ SECTION 2.2 MIXTURES 1. How might one separate a mixture of water and salt?
Premium Oxygen Chemical substance Chemical element