Workers who build railway tracks often use a process called thermite welding to connect pieces of track. Thermite is a mixture of aluminum metal
(Al)
and ferric oxide
(Fe2O3)
. A worker places thermite between two pieces of track and then burns it to form aluminum oxide
(Al2O3)
and iron
(Fe)
. As the reaction happens, the air around the mixture becomes so hot that the two pieces of track fuse together.
Select the true statement.
A.this chemical reaction is exothermic it converts chemical energy to thermal energy which is released into the surroundings
B. this chemical reaction is endorsement it absorbs thermal energy from the surroundings and converts that energy to chemical energy
1 answer
The true statement is:
A. this chemical reaction is exothermic; it converts chemical energy to thermal energy, which is released into the surroundings.
This is because the thermite reaction releases a significant amount of heat as it occurs, causing the surrounding air to become very hot.
