Transparent
a mirror is translucent even though it looks transparent.
You cannot see through a mirror, you can see the reflection coming off.
Aluminum foil is opaque.
translucent
Opaque
opaque
something
Transparent.
No, it's translucent.
All three ; the front is a mix of transparent & translucent and the back (where the photo-receptor dyes are) is opaque.
It is opaque
Opaque.