Obsidian always needs lava, either you make it with lava or water or find where the two have met naturally while underground. It cannot be crafted.
You can make obsidian by pouring water onto lakes. Then, you can mine it but you need a diamond pickaxe.
When your nether core reactors time runs out, you will get obsidian and you will keep your core.
I do not think that lava even exists on minecraft PE. You need to have water pour onto lava.
14 blocks of obsidian in a block formation
I made the question I meant pe
How to make a apple in minecraft pe
No
As of yet, you cannot make a snow golem in Minecraft PE. This will come in a future update.
You can't
Yes
In PE you can't craft anything.
Nothing can explode obsidian up to minecraft 1.2.5
make the nether reacter
You can't.... Notch haven't add Creepers in PE.
Make a 5x4 Portal going upwards of obsidian.