you cannot break bedrock in minecraft it is not possible
Yes, bedrock will block lava.
Well, bedrock is unbreakable in Minecraft, unless you use mods or creative. Bedrock has a blast resistance of 18,000,000. And no TNT can break that. So far, there is no way to break bedrock in UNmodded survival
with out modding, bedrock is invincible. there is no lave below it just the void. There is nothing there but air. it also kills you. But you can find lava around the bedrock on level 5 to 25 or so is usually a good place to look.
bedrock
In order to destroy bedrock in Minecraft, either the super pick-axe command or TNT can be used. These are the only two options without cheats.
I am assuming you're asking for a world generation seed that makes the map surrounded by bedrock, unfortunately... this cannot be found. The world generation scripts do not allow bedrock to form around the world, only below it... if you wanted to make a map with bedrock along the sides I reccomend the mod - "Singleplayer commands" or the plugin - "WorldEdit".
When the soil above it formed from the bedrock below.
I find diamonds by mining at bedrock level.
Yes, it is also breakable in the game Minecraft.
To find diamond on Minecraft PE (pocket edition) it is very similar to the computer version. Dig to bedrock. Your search for diamonds will begin ten layers up. You may search from ten layers up from bedrock, to about 20. Anywhere higher is pretty rare.
Sorry, but it is impossible to make bedrock in a furnace without using some sort of mod.