101 Part I Multiple Choice (2 points each) 1. Which element is most likely to form three covalent bonds? A) C B) Si C) P D) S E) Se 2. A chemical bond formed when two atoms share two pairs of electrons is a ________ bond; it is best described as ________. A) double; covalent B) double; ionic C) single; covalent D) single; ionic E) triple; covalent 3. Which property could describe a covalent compound? A) It conducts electricity when melted. B) Has a low boiling point C) It is composed
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AP biology FRQ Courtney DeMane 1.22.13 block 7 A). The chemical composition and structure of proteins seems quite confusing at first but one it is broken down into levels it is much more understandable. Amino acids are the basic building blocks of proteins and they contain amino‚ carboxyl and R groups. These R groups that are in the amino acids are what determine the properties of the specific amino acids. For structure‚ there are 4 levels. The first one being the primary level. These are made
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Biochemistry Types of bonding: Ionic Results from the attraction between two oppositely charged atoms or molecules. They must lose or gain electrons to become charged. For example‚ a sodium molecule and a chlorine molecule form an ionic bond to create sodium chloride (NaCl) Covalent Results from the sharing of one or more pairs of valence electrons to create a stable molecule. For example‚ the covalent bonding of hydrogen ions creates hydrogen gas (H2) or the covalent bonding between carbon and
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Edexel IGCSE Chemistry Revision Notes IGCSE Chemistry Triple Award Revision Guide Topic Introduction to chemistry Atomic Structure Structure and Bonding – Ionic Bonding Structure and Bonding – Covalent and Metallic Bonding Organic Chemistry - Alkanes Organic Chemistry – Alkenes / Addition Polymerisation Organic Chemistry – Alcohols / Condensation Polymerisation Calculations Periodic Table Reactivity Series and Metal Extraction Electrolysis Energetics Acids‚ Bases‚ Salts and Neutralisation
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TextBooks Sr No T-1 T-2 Title Engineering Chemistry Chemistry Reference Books Sr No R-1 Other Reading Sr No OR-1 OR-2 OR-3 OR-4 OR-5 OR-6 OR-7 Journals articles as Compulsary reading (specific articles‚ complete reference) http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1097-4601 ‚ http://www.springer.com/chemistry/electrochemistry/journal/10800 ‚ http://www.sciencedirect.com/science/journal/13882481 ‚ http://www.springerlink.com/content/100224/ ‚ http://www.sciencedirect.com/science/journal/00108545
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2. Which type of bonds are found between the hydrogen and oxygen atoms in the water molecule? (1) Covalent bonds 3. What is the name given to the attractive forces that exist between water molecules that are close to each other and causes them to stick together? (1) Hydrogen bonding 4. Use a diagram with 5 water molecules to illustrate hydrogen bonding between water molecules (start with one molecule in the middle). How many water molecules can hydrogen bond with a single
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molecules. In this activity you will learn about different types of chemical bonds and how they are formed. You will also learn why some atoms bond with other atoms and why some do not bond. Complete the worksheet as you learn about chemical bonding in this web quest. Log on to the
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1. The diagram below shows the electronic structure of boron. (a) The electrons are represented by arrows. What property of the electrons do these ‘up’ and ‘down’ arrows represent? ..................................................................................................................................... (1) (b) Suggest why electrons which occupy the 2p sub-levels have a higher energy than electrons in the 2s sub-level. .....................................................
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CHAPTER 1 EVOLUTION- the process of change that has transformed life on Earth BIOLOGY- scientific study of life EMERGENT PROPERTIES- result from the arrangement and interaction of parts within a system SYSTEMS BIOLOGY- constructs models for the dynamic behavior of whole biological systems EUKARYOTIC CELL- has membrane enclosed organelles‚ the largest of which is usually the nucleus PROKARYOTIC CELL- simpler and smaller‚ does not contain nucleus or other membrane enclosed organelles DNA- (Deoxyribonucleic
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Distinguish between covalent bonds‚ nonpolar polar covalent bonds‚ polar covalent bonds‚ hydrogen bonds‚ and ionic bonds‚ noting their relative strengths and how and where they form. 2.9 Explain the significance of chemical reactions. Identify the reactants and products of photosynthesis. Water’s Life-Supporting Properties 2.10–2.13 Describe the special properties of water that make it vital to living systems. Explain how these properties are related to hydrogen bonding. 2.10 Define and
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