In the reaction shown below, which substance is oxidized? 2 Cr(s) + Fe₂O₃(aq) → Cr₂O₃(aq) + 2 Fe(s)

What is it called when a substance loses an electron and oxygen is acquired?

In redox reactions, the reactant that is oxidized is also called the _________.

Oxidation involves the ________, and reduction involves the

When a(n) _________ agent oxidizes, it causes reduction in another substance.

True or false: a. If a substance is oxidized, it is gaining electrons.

Which of these statements is true?

a. If a compound is oxidized, it is gaining electrons.

b. If a base is neutralized, it is gaining protons.

c. Elements that are metals cannot be oxidized.

d. If hydrogen gas is generated in a reaction, it must be an acid–base reaction.