1.
When broken, (причастие 2,
обстоятельство) the
material has a black, silken fracture.
2.
Iron oxide is the major problem when forging (причастие 1, обстоятельство) steel.
3.
The film, made (причастие
2, определение) by
Stephen Spielberg, is expected (причастие 2, часть сказуемого) to be a great hit.
4.
They watched the burning (причастие 1, определение) forest
helplessly.
5.
Owing to these methods it has become (причастие 2, часть сказуемого) possible to
obtain new mechanical properties of the alloy.