Given a scientific passage and an answer, generate a question for the given answer.

[EX Q]: Passage: Note Organic and biochemical equations are frequently written showing only the organic reactants and products. In this way, we focus attention on the organic starting material and product, rather than on balancing complicated equations. Ethanol is oxidized in the liver to acetaldehyde:. Answer: products
[EX A]: Organic and biochemical equations show the initial and final products of the equation, respectively known as the reactants and what else?

[EX Q]: Passage: Molecular compounds are inorganic compounds that take the form of discrete molecules . Examples include such familiar substance as water (H 2 O) and carbon dioxide (CO 2 ). These compounds are very different from ionic compounds like sodium chloride (NaCl). Ionic compounds are formed when metal atoms lose one or more of their electrons to nonmetal atoms. The resulting cations and anions are electrostatically attracted to each other. Answer: molecular compounds
[EX A]: What are inorganic compounds that take the form of discrete molecules called?

[EX Q]: Passage: Hydrogen and helium are the most abundant elements in the universe. Answer: hydrogen and helium
[EX A]:
What are the two most abundant elements in the universe?