Skip to page content |

Tiscali Quicklinks. Please visit our Accessibility Page for a list of the Access Keys you can use to find your way around the site, skip directly to the main navigation, to the page content, or to more links within reference.

Advertisement starts

Advertisement ends

Content Starts Here

carbonate

encyclopaedia header
Encyclopaedia Search
Click a letter for the index
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Or search the encyclopaedia:
 
 
 
all results tagged with the © symbol denotes content that is relevant to the national curriculum

Carbonate


Ion formed when carbon dioxide dissolves in water; any salt formed by this ion and another chemical element, usually a metal.

Carbon dioxide (CO2) dissolves sparingly in water (for example, when rain falls through the air) to form carbonic acid (H2CO3), which unites with various basic substances to form carbonates. Calcium carbonate (CaCO3) (chalk, limestone, and marble) is one of the most abundant carbonates known, being a constituent of mollusc shells and the hard outer skeletons of crustaceans.

Carbonates give off carbon dioxide when heated or treated with dilute acids.

CaCO3(s) ® CaO(s) + CO2(g)

CaCo3(s) + 2HCl(aq) ® CaCl2(aq) + H2O(l) + CO2(g)

The latter reaction is used as the laboratory test for the presence of the ion, as it gives an immediate effervescence, with the gas turning limewater (a solution of calcium hydroxide, Ca(OH)2) milky. See calcium carbonate.

© Research Machines plc 2008. All rights reserved. Helicon Publishing is a division of Research Machines plc.


 
Back
 

Advertisement starts

Advertisement ends



acid
alkali
atmosphere (earth science)
basalt
base
calcium carbonate
calcium hydroxide
carbon cycle
carbon dioxide
carbonate
cementation
chalk (rock)
chemical weathering
coastal erosion
conglomerate (geology)
continental drift
core (earth science)
corrosion (chemistry)
crust
earthquake
erosion
evaporation
exfoliation
extrusive rock
fault
fertilizer
fold
fossil
freeze–thaw
global warming
gneiss
granite
gravel
greenhouse effect
helium
hydroxonium ion
igneous rock
indicator
intrusive rock
krypton
lava
lime (chemical)
limestone
lithosphere
litmus
magma
mantle
marble
metamorphic rock
metamorphism
mineral
neon
neutral solution
neutralization
nitrate
nitric acid
nitrogen
nitrogen cycle
ocean
oxygen
pH
physical weathering
plate
plate tectonics
plutonic rock
pollution
Precambrian era
precipitation (chemistry)
reaction
rock
rock cycle
salt
sandstone
schist
seafloor spreading
seawater
sediment
sedimentary rock
shale
silica
slate
soil
universal indicator
volcano
water
water cycle
water pollution
weathering

Related Links

Bosnia-Herzegovina Flag
Bosnia-Herzegovina Flag The stars on a blue field represent Europe. The yellow triangle stands for equality between the three peoples of Bosnia-Herzegovina. Effective date: 4 February 1998. >>

Advertorial

AdvertorialFind out how to buy the things you've always wanted and sell the things you don't on ebay.

Advertisement starts

Advertisement ends

More Links Within This Section

-->
encylopaedia

Page Footer

print now Print now send to a friend Send to a friend related articles Related articles related products Related products

Check shares

Check shares
Look up latest prices
more...

Best Loans

Best Loans
Search for the best rate.
more...

Dating

Dating
Find the love of your life
more...

TV guide

TV Guide
What's on the box?
more...
| Advertise | Press | Work at Tiscali | Site Map | Service Status | Help | Contact Us
© Tiscali 2008
IT | NET

Access keys


You will need to use different key combinations in order to use access keys depending on your internet browser, find out which on our accessibility page.
  • (0) Navigate to Accessibility page.
  • (1) Navigate to Home page.
  • (2) Navigate to My email.
  • (3) Navigate to My Account.
  • (4) Navigate to Site Map page.
  • (5) Navigate to Contact us page.
  • (6) Navigate to Members channel.
  • (7) Navigate to Services channel.
  • (8) Navigate to News & Info channel.
  • (9) Navigate to Entertainment channel.
  • ([) Skip down to the Primary navigation block.
  • (]) Skip down to the more links within this section block.
  • (=) Bypass all navigation and jump to the content.