New To Plants

[lilfishie]

Hey this is my first proper time with live plants so sorry if i seem rather dumb, anyway i got these 5 bunches today for £6 and i have split them, is that ok or not so good? i haven't got a clue what they are but am hoping they are aquatic and preferably lower light plants.
Plant 1:

Plant 2: on the right complete guess at Elodea densa ?

Plant 3: on the right

Many thanks from a complete plant newbie

 

[SJ2K]

Ive had plant 1 before, its probably due to my lack of plant knowledge at the time but mine just slowly rotted till there was just the stem left.

 

[Wolfenrook]

1: Cabomba
2: Egeria Densa
3: Amazon sword, probably either paniculatus or bleheri.

Ade

 

[lilfishie]

Thanks Ade