Starfinder Commonly Misunderstood Rules

[Andrew Roberts]

Grenades do not get deadly aim.  Their damage is listed as a special ability, not as damage like the other weapons 

DEADLY AIM (COMBAT)

Your can strike your enemies’ weak points and deal more damage.
Prerequisites: Base attack bonus +1.
Benefit: When you take the attack or full attack action with weapons (including a Solarian’s Solar Manifestation, but not Spells or other special abilities of any kind), you can take a –2 penalty to your attack rolls. If you do, those attacks deal additional damage equal to half your base attack bonus (minimum 1).

Cover modifies saves, just like in Pathfinder.

It's debatable actually whether grenades can. Explode isn't defined as a "special ability." Technically it is a "weapon special property" or "special property." Yes, I know it's nit-picky, but until there's further clarification I'm going to call it "unclear."