Carbonated water - the thing that makes fizzy drinks fizzy.
Atoms that are hydrogen or carbon only.
Compounds consisting of only hydrogen and carbon atoms only.
Any mixture with at least hydrogen and carbon within it.
Pregunta 2
Pregunta
Alkanes are [blank_start]saturated[blank_end] molecules that are [blank_start]hydrocarbons[blank_end]; they only consist of [blank_start]carbon[blank_end] and [blank_start]hydrogen[blank_end] atoms. They can be formed as a product of the [blank_start]fractional distillation[blank_end] of [blank_start]crude[blank_end] oil, or by reacting an alkene with [blank_start]two[blank_end] hydrogen atoms. The first few alkanes - in ascending size order - are methane, [blank_start]eth[blank_end]ane, prop[blank_start]ane[blank_end], [blank_start]butane[blank_end], [blank_start]pentane[blank_end], and so on. From the fifth one, the [blank_start]prefix[blank_end] will refer to the number of [blank_start]carbon[blank_end] atoms it has, with 5 being "pent-", 7 being "sept-", 10 being [blank_start]"dec-"[blank_end], and so on. The suffix of any alkane will always be [blank_start]"-ane"[blank_end].