Multiple of my plants have things that look like white burns on their leaves like a chemical was sprayed.

Question

What HAppend?

Answer 1

if its a fungal infection, u will find a cottony growth called mycelia. in that case u cn spray it with any copper sulfate containing antifungal

if its due to pale colour, its due to lesss light, the condition being called etiolation

Answer 2

Maybe they didnt have enough light in those white spots

Answer 3

Sounds like some kind of fungus. Ask at your local nursey

and find out what you can do or google plant fungus and

see what comes up.

Answer 4

Your plants have one of two things going on:

If you have recently applied fertlizer/a chemical/etc and it is only on the top of the leaf:  it is residue from the chemical that you applied.

If it is through the leaf (upper and underside) or you haven't applied anything:  

--an irregularly-shaped white mark indicates that you have a leaf miner problem.

--if you live near a large metropolitan area and the plants that they are showing up on are more tender, it is an effect of air pollution.  

--if not one of the above: it is Septoria cucurbitacearum, a fungal infection that is within the leaf (why you cannot feel it on the outside).   Initially it appears as spots which turn beige or white in color.  After a few weeks, pycnidia (small black-pepper-like spots) appear inside the leaf and stem lesions.  The best way to treat this is with Bravo, a type of fungicide that you can find at your local garden center.