Properties of Water and pH VmU3CLxvgU.

Slides:

Advertisements

Similar presentations

What makes water so special?

Advertisements

Properties of Water.

Properties of Water Section 2–2.

The attraction between a hydrogen atom on one water molecule and the oxygen atom on another Hydrogen bond.

Properties of water.

What makes water so special?

The Single most abundant compound in most living things

Properties of Water. Life depends on Hydrogen bonds in water Water is a polar molecule. – Polar molecules have slightly charged regions. – Nonpolar molecules.

 Compounds can be mixed together to create solutions ◦ Solutions are mixtures in which one or more substances are uniformly distributed in another substance.

Properties of Water GLE 1 Write a testable question or hypothesis when given a topic. Chapter 2.2.

 Water molecules are formed by covalent bonds that link two hydrogen (H) atoms to one oxygen (O) atom.  Water molecules have a slightly positive.

Lesson Overview Lesson Overview Properties of Water Objectives 2.2 Water - - Discuss the unique properties of water. -Differentiate between solutions and.

Properties of Water. Objectives: 1.Why are water molecules polar? 2.What are acidic solutions? 3.What are basic solutions?

Properties of Water. A compound is a pure substance made up of atoms of two or more elements The proportion of atoms are always fixed Chemical formula.

Lesson Overview Lesson Overview Properties of Water Lesson Overview 2.2 Properties of Water.

2-2 Properties of Water. The Water Molecule Like all molecules, a water molecule is neutral.

The Chemistry of Life Properties of Water. The Water Molecule Polarity –Polar molecules have a region with a slight positive charge and a slight negative.

The Chemistry of Life Properties of Water. Water A water molecule (H 2 O), is made up of three atoms: one oxygen and two hydrogen. H H O.

The Chemistry of Life Properties of Water. The Water Molecule Neutral Charge –All Molecules Are Neutral.

The Chemistry of Life Chapter 2. Ch 2.2-Properties of Water.

The subatomic particles that make up atoms are _______. 1.neutrons, electrons, & positives 2.electrons, neutrons, & protons 3.protons, electrons, & negatives.

The contents of this presentation include: The Water Molecule Cohesion vs. Adhesion Solutions and Suspensions Acids, Bases and pH.

PROPERTIES OF WATER Chapter 6.3. Water A water Molecules is made of Two Hydrogen atoms and an Oxygen atom H 2 0 O.

II. Properties of Water *Water is the single most abundant compound in most living things. A. The Water Molecule 1. Polarity Polar molecule – a molecule.

Ch. 2-2 Properties of Water. The water molecule Like all molecules, a water molecule is neutral. The positive charges on its 10 protons balance out the.

Properties of Water. Learning Objectives  Discuss the unique properties of water.  Differentiate between solutions and suspensions.  Explain what acidic.

Chapter 2.2 By the end of this lesson you will be able to describe the properties of water and determine the differences between acids and bases using.

Water Basics Polar: part of the molecule is slightly positive… other part slightly negative – Oxygen (-) – Hydrogen (+) Hydrogen Bond: Positive Hydrogen.

W ATER Water W HY IS WATER IMPORTANT ????? All living things need water, and most organisms contain water. Most of our body weight is water! Biological.

Properties of Water Chapter 2-2. The Water Molecule  Water covers ¾ of the Earth’s surface  Single most abundant compound in living things  Expands.

Chapter 2 Section 2 Properties of Water

2.2 The Water Molecule  Polarity A water molecule is polar because there is an uneven distribution of electrons between the O and H atoms.

2.2 Properties of Water. Water H 2 O, H-O-H H 2 O, H-O-H Polarity – one region of molecule is more + and other end is more - ; overall neutral Polarity.

2.2 The Properties of Water. The Water Molecule The Chemical compound for Water is H 2 O Overall, Water is Neutral, because it has same amount of protons.

2.2 The Properties of Water. The Water Molecule The Chemical formula for Water is H 2 O Overall, Water is Neutral, because it has same amount of protons.

6.3 Water and Solutions.

Section 3: Water and Solutions

CHAPTER 2 Biochemistry.

The Extraordinary Properties of Water

The Water Molecule: Covalent Bonding

The Extraordinary Properties of Water

What makes water so special?

The Chemistry of Water.

Chapter 2 The Chemistry of Life.

Section 3: Water and Solutions

Water, pH notes Properties of water 1. polarity 2. cohesion

What makes water so special?

Lesson 2.2: Water Properties

2-2 Properties of Water Q: How does the structure of water contribute to its unique properties? A: Because water is a polar molecule, it is able to form.

What makes water so special?

The Extraordinary Properties of Water

Copyright Pearson Prentice Hall

Solutions & Suspensions

Compare/contrast cohesion and adhesion.

“Water, water everywhere”

Intro. To Biochemistry: Water, Solutions and pH

2.2 Properties of Water.

The Importance of Water in Biology

Chemistry of Life.

copyright cmassengale

2-2 Properties of Water.

Chapter – Properties of Water.

Chapter 2-2 PROPERTIES OF WATER.

Copyright Pearson Prentice Hall

Chapter 2 Section 2 Properties of Water

2-2 Properties of Water.

Water Single most abundant compound in organisms.

Properties of Water.

Presentation transcript:

Properties of Water and pH VmU3CLxvgU

Van der Waals Forces Van der Waals forces- force between molecules due to intermolecular attraction.

Hydrogen Bonding Hydrogen bonding- a type of intermolecular attraction due to differences in electronegativity between a polar molecule that contains hydrogen and an atom in another polar molecule.

Properties of Water ALL a result of water’s ability to hydrogen bond! Cohesion Adhesion – Capillary action

Properties of Water Heat capacity Expands when frozen Ice is less dense than water

Mixtures of Water Solutions- all components are evenly distributed. – Solute – Solvent Suspensions- all components are NOT evenly distributed, water and nondissolved material. Example of both a solution and a suspension: blood

pH Scale Indicates the concentration of H + in a solution. pH = -log [H + ]

Buffers

Weak acids or bases that can react with strong acids or bases to prevent sharp, sudden changes in pH. Buffers dissolved in living organisms play an important role in maintaining homeostasis in organisms.