Question 1
In an oxidation-reduction reaction, the substance oxidized always ________.
◦ gains electrons
◦ gives up hydrogen atoms
◦ loses electrons
◦ takes on oxygen atoms
◦ becomes a charged species
Question 2
In this reaction, what is the substance oxidized?
Zn + 2 HCl → ZnCl
2 + H
2
◦ oxygen
◦ hydrogen
◦ zinc
◦ chlorine
◦ zinc chloride