Properties of Seawater Oceanography Unit #2. Water (& Hydrogen bonding)  Molecules form hydrogen bonds w/ each other.

Slides:

Advertisements

Similar presentations

Properties of Ocean Water

Advertisements

PHYSICAL PROPERTIES OF SEAWATER. How Unique is Water? Water is one of only 3 naturally occurring liquids (mercury and ammonia) Only substance occurring.

© 2011 Pearson Education, Inc. CHAPTER 5 Water and Seawater.

Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Chapter 3 Chemical and Physical Features of the Oceans Why.

H H O Slight negative charge at this end Slight positive charge at this end No overall charge Water.

Water H 2 O, Sea Water and what it means to life in the ocean….

Seawater Chemistry 70% of the Earth is covered by ocean water!

Marine Water. n Marine waters may be fully saline, brackish or almost fresh. Marine habitats include those below spring high tide limit (or below mean.

Chapter 6: Water and Seawater Fig Atomic structure Nucleus Protons and neutrons Electrons Ions are charged atoms.

Ch Properties of Ocean Water

Seawater Chemistry.

Properties of Ocean Water Chapter Ocean Water 1. Ocean water has both chemical and physical properties. a. Chemical properties are those characteristics.

Chemical and Physical Features of Seawater and the World Ocean

Ocean Chemistry Unit 5.  The chemical properties of the ocean are important to understand because the marine environment supports the greatest abundance.

CHEMICAL OCEANOGRAPHY

Seawater Seawater is a solution of about 96.5% water and 3.5% dissolved salts. The most abundant salt in seawater is sodium chloride (NaCl). Most elements.

Ocean Water Chemistry Chap 14, Sec 4.

Physical Oceanography Section 2: Seawater

Properties of Seawater. What do you see? The Blue Planet.

Chemical and Physical Features of Seawater Chapter 3.

Section 1: Properties of Ocean Water

15.1 Composition of Seawater.  The total amount of solid material dissolved in water  Mass of dissolved substances : Mass of the water sample  Shown.

PROPERTIES OF SEAWATER

20.1 Ocean Water Properties (physical….) (…and chemical.)

Chemical and Physical Features of Sea Water and the World Ocean Chapter 3.

15.1 Notes – Composition of Seawater Thursday 12/2/10.

© 2011 Pearson Education, Inc. CHAPTER 5 Water and Seawater.

Physical Properties of Ocean Water

Ocean Water Chapter 20.

Key Ideas Describe the chemical composition of ocean water.

Properties of seawater. Properties of water 1.Polarity and hydrogen bonding cohesion good solvent many molecules dissolve in H 2 O 2.lower density as.

Ocean Chemistry Unit 5. Colligative Properties of Seawater   Heat Capacity – –heat required to raise 1 g of substance 1°C – –Heat capacity of water.

PHYSICAL PROPERTIES OF SEAWATER. YOU NEED YOUR TEXT BOOKS TODAY JQ: Jot a list of anything you know about water.

Salt Water. Properties of Salt Water  Salinity is the amount of dissolved salts in water  The salinity of the oceans averages 35 ppt (parts per thousand)

Intro to Marine Biology Chapter 1. Salinity Salinity - total amount of salt dissolved in water. Salinity - total amount of salt dissolved in water. 3.5%

15 – 2 Sea water. Chemical Properties of Sea Water Sea water is 96.5% water, 3.5% salts Sea water is 96.5% water, 3.5% salts Salinity: Salinity: –Measures.

Composition of Ocean Oceans 11. Composition Seawater is made up of water (H2O) and dissolved salts. Seawater is made up of water (H2O) and dissolved salts.

Seawater Chapter 15 Section 2.

Seawater Properties.

OCEANOGRAPHY Physical and Chemical Properties Outline 1. Chemical Make-Up of Water 2. Heat Capacity of Water 3. Salinity of Water 4. Density of Water.

Seawater Pure H 2 0 and ……….. Salts Where do the salts in seawater come from?

Videos from sea floor s s

Videos from sea floor s s

Chemical And Physical Features of Seawater Chapter 3.

Properties of Ocean Water

Seawater Chemistry JQ: If you add a pinch of salt to water, will it boil faster?

Part 1. Aspects of a Marine Environment Wind Waves Tides Currents Temperature Salt and salinity **Take a minute and write what you know already about.

© 2014 Pearson Education, Inc. Chapter 5 Water and Seawater Salinity.

Chemical Properties of Seawater. I. The water molecule 1.Made of two hydrogen atoms and one oxygen atom.

The Nature of Water Compare and contrast the general structures of plant and animal cells. Compare and contrast the general structures of prokaryotic and.

Salt Water Oceans 11.

Temperature SalinityDensityLight Everything Else.

Salinity of Ocean Water salinity a measure of the amount of dissolved salts in a given amount of liquid Ocean vs. Freshwater = amount of salt.

© 2014 Pearson Education, Inc. Chapter 5 Density, Salinity, Temperature relationships in ocean water Water has many unique thermal and dissolving properties.

Chemical Oceanography

Marine Biology Definition: Why study? Includes: Geology

Properties of Seawater

Chemical and Physical Features of the Seawater and the World Oceans

Chemical Oceanography

Class The Oceans PROPERTIES OF SEA WATER Salinity

Chemical and Physical Features of the Seawater and the World Oceans

Seawater Seawater is a solution of about 96.5% water and

Water – The Universal Solvent

CHAPTER 5 Water and Seawater

Properties of Ocean Water

PHYSICAL PROPERTIES OF SEAWATER

Ocean Chemistry Unit 5.

PHYSICAL PROPERTIES OF WATER

Presentation transcript:

Properties of Seawater Oceanography Unit #2

Water (& Hydrogen bonding)  Molecules form hydrogen bonds w/ each other.

H20H20H20H20

Water (& Hydrogen bonding)  Molecules form hydrogen bonds w/ each other.  w/o hydrogen bonds, water freezes at -100° C.  w/o hydrogen bonds, water boils at -80° C.  High heat capacity.  Absorbs great deal of heat when evaporates.  Transparent.  Red wavelengths absorb first, blue last.

Absorption of Light

Marine Temperatures

 Seawater temps vary between about -3° C and 30° C.  < 0° C possible because saltwater freezes at colder temps.  Ideal organismal temp is between 0°C and 30 °C.  Temp ranges:  85°CThermal vents  40°CTropical lagoons  20°CSubtropical surface water  15°CTemperate surface water  5°CSub-polar surface water  0°CPolar surface water  -3°CAntarctic bottom water

Salinity  Amount of “salt” dissolved in water.  Includes inorganic salts, gases, and organics.  Expressed in ppt (‰), parts per thousand.  Ocean’s salinity ranges from 0‰ to 40‰.

Major Dissoved Ions

Salinity  Amount of “salt” dissolved in water.  Includes inorganic salts, gases, and organics.  Expressed in ppt (‰), parts per thousand.  Ocean’s salinity ranges from 0‰ to 40‰.  Increase salinity by:  Removing water during evaporation  Removing water during freezing  Decrease salinity by:  Add water during precipitation  Add water during thawing  Add water by river runoff

Seawater’s Density  Pure fresh water has a density of 1.0 gm/cm 3  Increasing salinity increases density of water.  Decreasing salinity decreases density of water.  Temperature effects on water’s density:  Water above 4°C, density increases with decreasing temp.  Water below 4°C, density decreases with decreasing temp.  Densest water is 4°C.  Least dense water is 0°C (ICE.)  WHY?

Water Freezing

Pressure  Sea level pressure = 14.7 lbs/in 2. (atmospheric)  Pressure under water increases w/ depth.  Every 10 m (33 ft.), adds another atmosphere of pressure.

Pressure