Question

analyzing chemical formulas
select the description of each substance given by each chemical formula.
one molecule of o₂ is made of
the compound al₂o₃ is made of
the compound koh is called

Explanation:

Step1: Analyze O₂

Oxygen gas ($O_2$) is a di - atomic molecule. It consists of two oxygen atoms.

Step2: Analyze Al₂O₃

Aluminum oxide ($Al_2O_3$) is made up of two aluminum atoms and three oxygen atoms.

Step3: Analyze KOH

Potassium hydroxide (KOH) is an ionic compound also known as a base.

Answer:

One molecule of $O_2$ is made of two oxygen atoms.
The compound $Al_2O_3$ is made of two aluminum atoms and three oxygen atoms.
The compound KOH is called potassium hydroxide (or a base).