Acid Damage vs Objects


Rules Questions


So I have a simple question: does acid damage do anything special vs objects? If yes can you point me to the rule please.


Just to clarify...

Are you talking about the acid you find in an acid flask, or the "acid energy" you find in spells or certain magical creature attacks?

'Cause I don't think they're the same thing.


Pathfinder Roleplaying Game Superscriber; Pathfinder Starfinder Roleplaying Game Subscriber

They are the same as far as game mechanics are concerned.

To my knowledge, acid doesn't do anything inherently special to objects, though the rules give the GM a lot of leeway when it comes to ruling differently:

Energy Attacks, from the Additional Rules chapter:
Energy attacks deal half damage to most objects. Divide the damage by 2 before applying the object's hardness. Some energy types might be particularly effective against certain objects, subject to GM discretion. For example, fire might do full damage against parchment, cloth, and other objects that burn easily. Sonic might do full damage against glass and crystal objects.

Vulnerability to Certain Attacks, from the Additional Rules chapter:
Certain attacks are especially successful against some objects. In such cases, attacks deal double their normal damage and may ignore the object's hardness.

A GM might rule that acid does half damage, full damage, double damage, and/or ignore the object's hardness.


@RD, when one form of acid is a liquid that is stored in flasks and the other form of acid is a type of energy I can convert to a different type of energy with a feat or through a class ability...

Well, that ain't the same dude.

Unless you are saying that an elemental bloodline sorcerer can convert an acid flask to an electricity flask...

Is that what you're saying?


No but having acid resistance protects from both and things vulnerable to acid take extra damage from both.

If something has regeneration that shut off by acid either counts.

It doesn't matter that cettain magic users can modify there spells what matters is whether or not it is acid.

For game purposes assume acid damage is acid damage and all acid damage is the same. Note that if acid energy is changed to cold energy it is no longer acid energy and no longer deals acid damage and as such is no longer acid damage.


@Talonhawke, saying that acid resistance protects from acid flasks and acid energy isn't the same thing as saying that acid in a flask is the same thing as acid energy.

The bottom line here is that one form of "acid" is a physical liquid thing that can sit in a flask for eons.

The other form of "acid" is a type of energy that is created from magic.

They have similar effects, but they are not the same thing.

They are at least as different as "fire" and "magical fire," which must be different because some effects protect against normal fire but not magical fire. But I would say acid in a flask is even more different from acid energy than fire is different from magical fire since both forms of fire are energy while acid in a flask is just an inert chemical until it interacts with other things.

Grand Lodge

It depends on the object, not the acid.


What me and RD are saying is that they interact with things the same way.

We are not saying its the same thing we are saying that if you pour a vial of acid on something then using an acid spell on it will do the same thing (assuming the something is targetable by the spell and the spell in question has nothing that changes how it effects the something.)

Note that RD said they are the same as far as the mechanics go. That means that unless you have an exception then they function the same. Elemental sorcerers say they change spell energy types, thats an exception.

Dark Archive

Adamantine Dragon wrote:

@Talonhawke, saying that acid resistance protects from acid flasks and acid energy isn't the same thing as saying that acid in a flask is the same thing as acid energy.

The bottom line here is that one form of "acid" is a physical liquid thing that can sit in a flask for eons.

The other form of "acid" is a type of energy that is created from magic.

They have similar effects, but they are not the same thing.

They are at least as different as "fire" and "magical fire," which must be different because some effects protect against normal fire but not magical fire. But I would say acid in a flask is even more different from acid energy than fire is different from magical fire since both forms of fire are energy while acid in a flask is just an inert chemical until it interacts with other things.

acid spells are conjuration (creation) [acid], not evocation.

you actually DO create regular acid-acid just like the stuff in the flask


Damn. I was hoping to be able to use acid splash on doors and stuff in order to have an "easy" way of opening things.


As RD says ask your Gm he may allow the acid to have an extra effect of some sort.

Grand Lodge

Durable adamantine arrow solves your problem.


The acid attacks I was referring to are not necessarily conjuration, neither are most acid attacks from magical beasts. It is even listed as one of the standard "energy" attacks.

But no matter. It is, as you all say, mostly treated the same. I was having an attack of pedantism... my apologies.


Lord Phrofet wrote:
Damn. I was hoping to be able to use acid splash on doors and stuff in order to have an "easy" way of opening things.

many acids in real life are very reactive to metals, so ask your GM if your acid splash can ignore the hardness of the doors hinges. With the low damage potential of acid splash it will still take you a while to get through a door though.

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