Which elements are found in a hydrocarbon?

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Study for the IGCSE Edexcel Chemistry Test. Access flashcards and multiple choice questions with hints and explanations. Get ready for your exam!

Multiple Choice

Which elements are found in a hydrocarbon?

Explanation:
Hydrocarbons are compounds made only from carbon and hydrogen. That means every molecule consists of carbon atoms bonded to hydrogen atoms, with no other elements present in the formula. Examples like methane (CH4), ethane (C2H6), and benzene (C6H6) all fit this pattern. If you introduce elements such as oxygen or nitrogen, you’d have alcohols, amines, or other types of compounds, not hydrocarbons. Helium doesn’t form the kind of covalent networks that hydrocarbons require, so it isn’t part of hydrocarbon composition. Therefore, the elements found in a hydrocarbon are carbon and hydrogen only.

Hydrocarbons are compounds made only from carbon and hydrogen. That means every molecule consists of carbon atoms bonded to hydrogen atoms, with no other elements present in the formula. Examples like methane (CH4), ethane (C2H6), and benzene (C6H6) all fit this pattern. If you introduce elements such as oxygen or nitrogen, you’d have alcohols, amines, or other types of compounds, not hydrocarbons. Helium doesn’t form the kind of covalent networks that hydrocarbons require, so it isn’t part of hydrocarbon composition. Therefore, the elements found in a hydrocarbon are carbon and hydrogen only.

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