just asking..
2007-05-04 07:16:17 · 10 answers · asked by rhiza 1 in Science & Mathematics ➔ Botany
No.
The expression "Lime", is usualy meant to mean slaked lime.
This is my second attempt at this question as I have just remembered doing this as a practical experiment in the lab.
(57 years ago!)
Lime is slaked lime. Formula is Ca(OH)2
This is made by heating calcium carbonate, until it becomes incandescent and then quenching it with a limited ammount of water.
The formula for this is:-
CaCO3 + H2O = Ca(OH)2 + CO2
CaCO3 being the formula for calcium carbonate.
2007-05-04 07:38:42 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Hi, Calcium carbonate is just another name for chalk, marble or limestone. Scale from your kettle can be and often is mostly this BUT This depends on your water supply ie what is dissolved in it? Scale or fur, even if it is chalky, has been subject to the extreme localised heat of the kettle element or heated metal skin of the kettle. This causes the chalky part to become 'quicklime' (calcium oxide)which gets 'slaked' by more water as it cools down again. (Slaked lime - another old fashioned name for calcium hydroxide!) Other component parts of the 'fur' act in different way with this heating/cooling cycle and will vary throughout the country. Stcking with the chalky part, the calcium carbonate component enters the stomach, gets attacked by the Hydrochloric acid part of your digestive juices and becomes calcium chloride + carbon dioxide expressed as 'wind'. The calcium chloride element acts a s a mild diuretic and causes you to go for a pee more frequently than usual. I suppose then that VERY excessive amounts therefore would interfere with your digestive system as an antacid (often chalk-based) would, cause you to dehydrate and fart! The effects of excessive amounts of the other parts of 'scale' would vay in different parts of the country, BUT that wasn't the question was it?
2016-05-20 05:46:59 · answer #2 · answered by ? 3 · 0⤊ 0⤋
Calcium carbonate is a compound that takes several forms: chalk and limestone are two of the commonest. Calcium oxide is quicklime. When water is added to quicklime, a vigorous chemical reaction occurs and the result is calcium hydroxide, called slaked lime. The definition of lime is therefore rather blurred; it is better to use the chemical names when referring to calcium compounds.
Further to this, blackboard "chalk" is actually calcium sulphate, also known as gypsum!
2007-05-04 07:32:35 · answer #3 · answered by Michael B 6 · 0⤊ 0⤋
The other two are correct, calcium carbonate is limestone. Calcium oxide is lime.
When I have trouble with chemical structures/compounds and other information, I usually look it up on www.chemfinder.com. Creating an account is free and unlimited searches, otherwise you only get to look up 3 times from a computer.
2007-05-04 07:27:16 · answer #4 · answered by Tara 1 · 0⤊ 0⤋
Calcium carbonate is the chemical name for lime-stone.
2007-05-04 07:20:37 · answer #5 · answered by swivels7 2 · 0⤊ 0⤋
No, lime is Calcium Hydroxide (slaked lime) or Calcium Oxide (quicklime).
2007-05-04 07:27:26 · answer #6 · answered by Adam S 4 · 0⤊ 0⤋
yup lime has calcium in it which is an essential nutrient for a plants growth, so when you plant something its generally best to add lime
2007-05-04 08:31:20 · answer #7 · answered by Scott 2 · 0⤊ 0⤋
yes..its lime-stone..(this question worth 5 my dear..)
2007-05-04 07:24:13 · answer #8 · answered by Munirah 2 · 0⤊ 0⤋
it's the same as limestone
2007-05-04 07:31:41 · answer #9 · answered by ♥♥♥ 5 · 0⤊ 0⤋
yes, they are.
2007-05-04 07:41:09 · answer #10 · answered by Anonymous · 0⤊ 0⤋