Chemistry

1 Name _______________________________ Date _________________ Period _________ Extraordinary properties of Water ppt Questions 1. What is the formula for a molecule of water? 2. Which atom in water attracts more negative electrons? 3. Water is a ________________ molecule because it has an equal number of ________________ and ___________________. 4. What is water?s net charge? 5. Water is called a _______________ molecule because the oxygen end ?acts? _____________ charged and the hydrogen end ?acts? _______________ charged. 6. One hydrogen bond is ____________, but many hydrogen bonds are ____________. 7. How do hydrogen bonds form? PROPERTIES OF WATER 8. At sea level, water boils at _______________ and freezes at ____________.

1 Name: _____________________________ Date: ______________________________ 1. Because oxygen atoms tend to attract positively charged atoms, organic compounds that contain oxygen atoms tend to form ________________ bonds. 2. In the molecule that has the chemical formula C2H4, the carbon atoms are bonded together with a _________________________ bond. 3. What are the three types of bonds? _________________, ______________________, ___________________ 4. A substance that tends not to react with water, "Water hating" , is ________________________ 5. Breaking of _______________ bonds is the first thing that happens when water is heated, which means that it takes a

BL10A HALL 2006 1 LECTURE 5: LIPIDS Fats, Oils, Phospholipids, Waxes, Steroids, Soaps Lipids Outline ? Lipids (structure and function) ? Structure (components) & properties ? Saturated and unsaturated fatty acids ? Phospholipids, micelles ? Steroids, cholesterol BL10A HALL 2006 2 Objectives ? At the end of this lesson you should be able to: ? Lipids (structure and function) 1. Describe the structure of triglycerides and their components 2. Differentiate between saturated and unsaturated fatty acids 3. Describe the structure of phospholipids, steroids. 4. State the function and properties of different types of lipids. BL10A HALL 2006 3 BL10A HALL 2006 4 Lipids ? Consist of C, H and O; Have less O

1 LECTURE 2: Water Hydrogen oxide Dihydrogen monoxide Hydrogen hydroxide Course outline - Water ? Structure of water ? Solvent Properties ? pH properties ? Temp. Regulation ? Heat capacity ? Heat of fusion ? Heat of vapourization ? Surface Tension ? Capillarity BL10J HALL 2006 2 Objectives ? At the end of this lesson you should be able to: ? Describe the structure of the water molecule ? Describe how water molecules are affected by ? pH, Temperature, Surface tension, Capillarity ? Explain the properties of water that make it an effective solvent. BL10J HALL 2006 3 BL10J HALL 2006 4 Water ? Abundant on earth. ? Covers 3/4 of the earth?s surface ? 70% of our body weight. ? Makes life possible.