Posts: 17
Joined: Tue Sep 04, 2007 11:03 am

elemental makeup of saltwater

Postby scotta740 » Thu Nov 15, 2007 12:15 pm

I need to know the elemental makeup of saltwater VERY soon!!
Scott A.

Former Expert
Posts: 1019
Joined: Fri Oct 28, 2005 11:43 am
Occupation: Research Hydrologist

Postby ChrisG » Thu Nov 15, 2007 12:19 pm

Welcome to Science Buddies. Your best bet for a general question like that is to use a web search. Try typing "sea water composition" or similar terms into your favorite search engine. If you have more specific questions about how to do an internet search, or about your science fair project, please feel free to ask.

Good luck!

Posts: 4
Joined: Tue Sep 04, 2007 11:03 am

it depends

Postby jimb740 » Sat Nov 17, 2007 10:51 am

Scott I checked "seawater" on acessscience. the second hit(seawater elements geochemical distribution) said the compound varies. however there is a link on that page you might be able to make sense out of (the link is "seawater").

Former Expert
Posts: 15
Joined: Wed Oct 31, 2007 3:37 pm

Postby elin105 » Sat Nov 17, 2007 7:10 pm

Hi Scott!

I need to know the elemental makeup of saltwater VERY soon!!

This is a very interesting topic! How are you planning on making the seawater solution? For example, if you mix distilled water with salt, you will get different results than if you use seawater that has minerals in it.

Elisa L.

Former Expert
Posts: 238
Joined: Thu Jan 05, 2006 6:28 pm

Postby zzzzdoc » Sun Nov 18, 2007 2:05 pm

If you can't find the information online, go to you local marine fish store. Look at the ingredients in Instant Ocean, or Tropic Marin (or a number of other) salt water mixes for aquariums. You will need to take into account the dilution with water to get the actual concentration (the bags are labelled with how much water they need to be diluted with), but when done, they closely approximate sea water concentrations.

Perhaps their web sites have the same information.
Alan Lichtenstein, MD

Mens et manus

He who laughs last...Thinks slowest.

Posts: 17
Joined: Tue Sep 04, 2007 11:03 am

Postby scotta740 » Thu Nov 29, 2007 10:30 am

very true :)
Scott A.

Former Expert
Posts: 13
Joined: Thu Nov 15, 2007 5:25 pm

Postby tbnm815 » Fri Dec 14, 2007 3:54 pm

Saltwater is considered saline water, which is a general term for water that contains a significant concentration of dissolved salts (NaCl.)

Hope I helped!

Posts: 1415
Joined: Sat Nov 08, 2003 11:27 pm
Occupation: Planetary Scientist

Postby tdaly » Sat Dec 15, 2007 11:53 am

The textbook An Introduction to the World's Oceans contains an entire chapter discussing the composition of seawater. An outline of the chapter is available here: ... apter6.pdf. The text's homepage is here: ... ent_view0/.
All the best,

Posts: 5
Joined: Tue Sep 04, 2007 6:08 am

Postby qianpeiw740 » Mon Dec 17, 2007 4:37 pm

I'm also doing a project on seawater! The chemical makeup depends but usually has sodium chloride, potassium bromide, calcium, magnesium etc in it
QianPei W

Return to “Grades 6-8: Physical Science”