It should be capitalized only at the beginning of the sentence and when it forms part of the proper noun.
Examples:
Mercury, the planet
Mercury Drug, a leading drugstore in the Philippines
Yes, Mercury should be capitalized when referring to the planet in our solar system. It is a proper noun and follows standard rules of capitalization.
Yes, the names of planets in our solar system are capitalized. For example: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.
"Can" is typically not capitalized in sentences unless it is the first word or part of a proper noun.
Yes, "Spring 2009" should be capitalized because it is a specific season and year.
Yes, "I am" is typically capitalized because "I" is a pronoun and should always be capitalized in English.
Yes, "Malaysian" is capitalized when referring to the nationality or language of Malaysia.
Yes, the names of planets in our solar system are capitalized. For example: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.
The anagram is mercury (a liquid metal), capitalized Mercury as the name of the planet nearest the Sun.
The anagram is mercury (a liquid metal) or capitalized Mercury, the planet named for the Roman god of commerce, messaging, and travel.
If this is a chemical symbol, it is an erroneous version of "Hg", which is the atomic symbol for the element mercury. The first, including only when appropriate, letter of an atomic symbol should always be capitalized, and any additional letters in the symbol should not be capitalized.
The element symbol for Mercuary should be capitalized like this: Hg It should be like that no matter how you have it in an equation.Ignoring Matty's ignorance of the question asked...According to Wikipedia "In former versions of the IUPAC recommendations, names were written with a capital initial letter. This practice has been abandoned in later publications.[3] The names of chemical compounds and chemical elements when written out, are common nouns in English, rather than proper nouns. They are capitalized at the beginning of a sentence or title, but not elsewhere. Note that for chemical elements this applies to the word only and not the chemical symbol, which is always capitalized. Both rules remain even with chemical elements derived from proper names which would otherwise be capitalized, in keeping with IUPAC policy to differentiate proper names from things named after proper names. Thus, it is californium but the symbol is Cf, and einsteinium, but symbol Es. Note that names for odd or rare chemicals are uncapitalized like common ones, and thus uranium and plutonium (symbols U and Pu) should be uncapitalized like carbon or iron (symbols C and Fe). This rule (full name uncapitalized but symbol capitalized) applies also to isotopes and nuclides, when completely written out: thus 14C but carbon-14. (The element mercury is uncapitalized, but of course the planet and god Mercury remain capitalized proper nouns)."So no, mercury isn't capitalized unless it refers to the planet or the god. Or Freddie Mercury, who is a god.
No, seasons are not capitalized.
"Can" is typically not capitalized in sentences unless it is the first word or part of a proper noun.
Yes, "Spring 2009" should be capitalized because it is a specific season and year.
No, keywords do not have to be capitalized.
No it's not capitalized.
No it shouldn't be capitalized.
Wikipedia is capitalized.