As nouns the difference between calcium and helium
is that calcium is calcium while helium is helium.
calcium
English
Noun
(
wikipedia calcium)
(
Symbol'': ''Ca )
A chemical element, atomic number 20, that is an alkaline earth metal and occurs naturally as carbonate in limestone and as silicate in many rocks.
* {{quote-magazine, year=2013, month=September-October, author= Katie L. Burke
, magazine=(
American Scientist), title=
In the News
, passage=Oxygen levels on Earth skyrocketed 2.4 billion years ago, when cyanobacteria evolved photosynthesis:
(countable) An atom of this element.
Derived terms
* bismuth strontium calcium copper oxide
* calc-, calci-
* calcic
* calcio-
*
*
*
*
*
*
*
* calcium arsenate
* calcium carbide
* calcium carbonate
* calcium chloride
* calcium cyanamide
* calcium dihydrogen phosphate
* calcium fluoride
* calcium hydride
* calcium hydroxide
* calcium light
* calcium magnesium carbonate
* calcium magnesium silicate
* calcium nitrate
* calcium oxide
* calcium peroxide
* calcium phosphate
* calcium phosphide
* calcium platinate
* calcium sulfate, calcium sulphate
* calcium sulfide, calcium sulphide
* calcium tungstate
* dicalcium
* monocalcium
* oxycalcium
* tricalcium
Related terms
* BSCCO
*
* calcia
* calcite
* calx
* calculus
References
External links
See also
* chalk
* lime
* limestone
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helium
Noun
(uncountable) A colorless and inert gas, and the second lightest chemical element (symbol He) with an atomic number of 2 and atomic weight of 4.002602.
(countable) A form or sample of the element.
Derived terms
(terms derived from helium)
* heliair
* heliox
*
*
* helium burning
* helium dating
* helium flash
* helium fusion
* helium speech
* helium star
* helium variable
* liquid helium
* orthohelium
* parahelium
Related terms
* helio-
* Helios
Synonyms
* when used as a packaging gas
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