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 . 1. Cohesive behavior.. 2. Ability to moderate temperature. 3. Expansion upon freezing.. 4. Versatility as a solvent. Nature of Water . . Polar Molecule Hydrogen Bonds. 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 . 1. Cohesive behavior.. 2. Ability to moderate temperature. 3. Expansion upon freezing.. 4. Versatility as a solvent. Nature of Water . . Polar Molecule Hydrogen Bonds. “the liquid of life”. Water water everywhere and not a drop to drink. Don’t go chasing waterfalls. Like a bridge over troubled water. Rain drops keep falling on my head. The fog creeps in on little cats feet. 1. Cohesive behavior.. 2. Ability to moderate temperature. 3. Expansion upon freezing.. 4. Versatility as a solvent. Nature of Water . . Polar Molecule Hydrogen Bonds. 2016. Chapter 3: Water. From Topic 2.2 . Essential idea. : Water is the medium of life.. Nature of . science: . Use . theories to explain natural phenomena—the theory that hydrogen bonds form between water molecules explains the properties of water. (2.2. 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 . 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 How Much Fresh Water Is on Earth?. 3%. Chemical Structure of Water. Water is composed of two atoms of Hydrogen (H) and one atom of Oxygen (O).. The chemical structure of water looks a lot like a famous Mouse- M-I-C…K-E-Y…M-O-U-S-E. The head being the O and the ears being the H.. ?. Water Cycle. What is a polar molecule?. Has . polar . bonds:. Water has polar covalent bonds. Oxygen is more electronegative than H. Electrons of covalent bonds spend more time closer to Oxygen than to H.