What shows the theme of appearance vs. reality in Othello? Is it possible to write the ideas in point form?

It appears that Desdemona and Cassio are having an affair.
In reality, they are not.

It appears that Desdemona has
Cassio in her heart when she pleads for his reinstatement as lieutenant. In reality, she
is just doing him a favor.

It appears that Cassio slips
away from Desdemona when he sees Othello coming. In reality, Cassio was just giving
Desdemona space to talk with Othello about being reinstated as
lieutenant.

It appears that Desdemona has given her most
cherished handkerchief to Cassio. In reality, Iago planted the handerkerchief on
Cassio.

When Iago and Cassio are talking, it appears that
Cassio is laughing and talking about his affair with Desdemona. In reality, he is
talking about Bianca, his mistress.

It appears that Iago is
Othello's friend. In reality, Iago is Othello's worst enemy.