Roughly $3 a pound
It is a 1:3 ratio of aluminum oxide and black iron oxide (respectively, and is the best mix)
Yes, the best mixture (cost effectively and fairly good burn) is Aluminum-oxide and Black iron oxide
Thermite is easy to make, just mix fine powdered aluminum powder (400 mesh) with fine powdered iron oxide, the ratio is 1:2. Its better to light it with a magnesuim strip. The ingredients can be bought on eBay.
Thermite is a pyrotechnic composition of a metal powder and a metal oxide, which produces an aluminothermic reaction known as a thermite reaction. It is not explosive, but can create short bursts of extremely high temperatures focused on a very small area for a short period of time.
2Al + Fe2O3 -> Al2O3 + 2Fe the thermite reaction-
About 10.5 is the cost to build
Thermite welding is all about using thermite for welding steel or iron. Thermite is actually a mixture of iron oxide and powdered aluminum.
Copper thermite is a type of thermite where instead of the iron oxide, copper oxide is used instead. The reaction produces pure copper metal, but this thermite gets a little more splattery than the iron thermite.
Thermite is manufactured from pure metals and avoiding the use of carbon in the process of it. Thermite was originally discovered by a German chemist named Hans Goldschmidt.
Thermite reaction is used in industry for welding steel together in-place
Thermite is not illegal in (most) countries, as long as you keep yourself and everyone else safe from it.
Thermite is a mixture of 1 part aluminum oxide for every 3 parts iron oxide
For the classical iron oxide and aluminum thermite, the products of the reaction are aluminum oxide (Al2O3) and iron (Fe). However, there are many kinds of thermite, but they always produce the pure metal from the oxide.
Thermite has its own oxygen source so it can burn without an outer source of oxygen, including underwater and in the vacuum of space. However, I do doubt that thermite can burn in space, since space is quite cold. It would just depend in how far away from the Sun you are when you light the thermite.
It is ilegal
yes
yes
Yes, the best mixture (cost effectively and fairly good burn) is Aluminum-oxide and Black iron oxide