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Pre-AP Biology Water Properties (2.2) Part 1
Earth 2/3rds covered by water
Organisms are mostly water
Polar covalent bonding of water molecule See how each end(pole) has an electrical charge?
Hydrogen bonding between water molecules See the central molecule bonding to the 4 outside molecules?
Water needs to get to the leaves for Photosynthesis. Cohesion of water helps.
Adhesion See the water molecules binding to the Na + or Cl - ? Which atoms of water are are attracted to the Na + ? How about to the Cl - ?
Earth and Temperature
States of Water on Earth Solid, Liquid, and Gas
All four Hydrogen bonds have to break at the same time to allow water to evaporate in a gas. That requires a lot of Energy.
Heat Total amount of kinetic energy in a substance There is so much energy moving through the metal, it glows.
Temperature Intensity of all the heat in a substance Which is showing the most intensity? Least?
Ice versus Water It is about molecule movement.
Expansion of water as it freezes Look at the distance between water molecules. Which one looks more dense as a whole?
Life below the water
Pre-AP Biology Water Properties (2.2) Part 2
Water dissolving pulling apart the salt See the water forming shells around the Na + and Cl - ? Which molecule is the solvent? The solute?
Hydrophobic Water fearing substances See how they do not interact/mix?
Salt is hydrophilic in water.
Dissociation of Water
pH scale The H in pH is for Hydrogen Measuring the concentration of Hydrogen ions (H + ) within a substance
Buffering by Bicarbonate in blood Find Bicarbonate in the red blood cells
Acid Rain Source Burning fossil fuels such as oil or gas
The effect of acid rain on plants See the dead trees?
Acid Rain and Concrete
? Water =Life Water =Life Why water is so FREAKIN cool: 1. Its Polarity gives potential. 1. Its Polarity gives potential. 2. Cohesion/Adhesion/Surface.
Section 2.2. What do you know about water? Unique Properties of Water: Most abundant compound in nearly all living things.
1 Water. Life on earth evolved in water,and all life still depends on water. At least 80% of the mass of living organisms is water and almost all chemical.
AP Biology Chapter 3 Water and the Fitness of the Environment.
Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings PowerPoint Lectures for Biology, Seventh Edition Neil Campbell and Jane Reece.
Chapter 3 Water and the Fitness of the Environment.
Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings PowerPoint ® Lecture Presentations for Biology Eighth Edition Neil Campbell.
Biochemistry Chemical reactions in living things..
1 The Nature of Molecules Chapter 3. 2 Atoms 3 Kinds of Atoms Ninety-two naturally occurring elements – Periodic table arranged by grouping atoms based.
TOPIC 3: CHEMISTRY of LIFE. 3.1: Chemical Elements and Water.
Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Chapter 2 Chemistry of Life Revised by R. LeBlanc.
1 The Nature of Molecules Chapter 3. 2 Water Chemistry Water consists of an oxygen atom bound to two hydrogen atoms by two single covalent bonds. – stable.
Water: The Facts Water is possibly the most important compound in living organisms. Water consists of 1 atom of oxygen combined with 2 atoms of hydrogen.
1. 2 Ice = less than 0°C (solid) Water = 0°C – 100 ° C (liquid) Steam = greater than 100 °C (gas)
CH. 2 Chemistry of life Section 1 Nature of matter Atoms Atom- is the smallest unit of matter that cannot be broken down by chemical means. Atoms consist.
LESSON TWO Properties of Water and pH NEXT. Part 1: Properties of Water Review the following information about the properties of water to complete your.
1. 2 Hydrogen bonding 3 Surface tension 4 Ice, water, vapor.
Water. General Facts Water makes up 70% to 95% of most organisms. Water is used to transfer materials in organisms by dissolving ions or polar molecules.
Structure & Properties of Water. STRUCTURE OF WATER POLAR MOLECULE CAPILLARY ACTION SURFACE TENSION UNIVERSAL SOLVENT COHESION ADHESION DENSITY BUOYANCY.
Chapter 15 Water. Water Molecules l O is more electronegative than H l Gives O a partial negative charge l Bent shape makes molecule polar l Strong hydrogen.
Chapter 3: Water Waters Polarity Cohesion, moderation of temperature, ice is less dense, universal solvent Dissociation of water molecules pH T.O.D: (table.
1. A water molecule is: a. Ionic b. Polar Covalent c. Nonpolar covalent.
Why Study Chemistry in Biology?. I. Atoms Definition: smallest particle of an element.
Why Study Chemistry in Biology?. I. The Atom A. Definition: smallest particle of an element.
Water. Properties of Water Polar molecule Cohesion and adhesion High specific heat Density – greatest at 4 o C Universal solvent of life.
Chapter 6 Chemistry in Biology 6.1 Atoms, Elements & Compounds 6.2 Chemical Reactions 6.3 Water and Solutions 6.4 The Building Blocks of Life.
A Summary of How Theories Develop in Science: – based on a series of verifiable observations & measurements. leads to a conclusion based on inductive reasoning.
QOD: In a group of 4, each pick one paragraph of the article to read. (note: paragraph 2 is the hardest one, the back page will be more helpful) When.
Chemistry of Life. I. Nature of Matter A. Atoms B. Chemical Bonding II. Water and Solutions A. Cohesion & Adhesion B. Polarity C. Acid & Bases.
Ch. 4 Chemical Basis of Life. 4.1 Life requires about 25 chemical elements.
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