PPT-Nature of molecules and Properties of Water

Democritus 450 BC Cannot Be Cut Nature of Atoms Matter occupies space and has mass ATOMS Central Nucleus Protons positive charge and Neutrons neutral charge Electrons negative charge surround the nucleus electron cloud . Water. A water molecule (H. 2. O), is made up of . three. . atoms --- one . oxygen. and two . hydrogen. .. H. H. O. Water is Polar. In each water molecule, the . oxygen atom attracts more. than its "fair share" of . . Water is the solvent of life.. Virtually all cells have water in them (cytoplasm) and water in the surrounding environment (intercellular fluid, pond water, etc).. Many of water’s properties depend on the structure of water molecules. . Collin College. Lecture Presentation. Chapter . 1-1. Matter, Measurement,. and Problem Solving. What Do You Think?. What do you think . is the most important idea in all of human knowledge?. If we limit ourselves only to scientific answers, it would be this:. Democritus – 450 B.C. – “Cannot Be Cut” . Nature of Atoms . Matter- occupies space and has mass . ATOMS. Central Nucleus: Protons- positive charge and Neutrons- neutral charge. Electrons- negative charge - surround the nucleus –electron cloud . What are materials made from?. Every material is a chemical or mixture of chemicals, including:. Ceramics, for bricks, wall tiles and plates. Metals, for vehicles, high-rise buildings, and jewellery. 1. Unit Map. 2. You are here. 3. Facts and questions about organisms. Some things we know:. All organisms are made of cells. All the functions of organisms are done by cells working together. All cells are made of molecules. Water. A water molecule (H. 2. O), is made up of . three. . atoms --- one . oxygen. and two . hydrogen. .. H. H. O. Water is Polar. In each water molecule, the . oxygen atom attracts more. than its "fair share" of . Properties of Water. Polar. Cohesion. Surface Tension. Adhesion. Capillary Action. High: Specific Heat/ Heat of Vaporization/ Heat of Fusion. Less Dense as a Solid. Universal Solvent. Chemistry of Water. updated 9-9-2014. Unit 1. Properties of Water Lab. Date (unique to you). Page (unique to you). Table of Contents. Read . information about the properties of water and carry out the experiments using the materials at your lab station. . Discuss the special properties of water that contribute to Earth's suitability as an environment for life: cohesive behavior, ability to moderate temperature, expansion upon freezing, and versatility as a solvent. . A Presentation to Accompany the Case Study: NATIONAL CENTER FOR CASE STUDY TEACHING IN SCIENCE Do Grasshoppers Sweat? by John G. Cogan, Emily Hill, and Henry D. Prange The Molecule of Life Water is the biological medium of life on . It keep us alive; most organisms are more than 70% water.. It sculpts the earth’s surface and moderates the climate.. Water removes and dilutes wastes and pollutants. Importance of . Water. Click on hyperlink to view video clip. What Happens When Matter Starts Off as One Thing and Changes into Something Different?. How Can Matter Change?. What happens to the molecules when a solid changes to a liquid?. What happens to the molecules when a liquid changes to a solid? . Daley & . Daley. Chapter . 4:. Physical Properties. 4.1 Physical properties of organic molecules. Solids, liquids & gases. Melting point. Boiling point. 4.2 Types of intermolecular interactions.