Homogeneous or heterogeneous, Hope this helps!!
30. mixture of compounds
31. compound
32. element
33. compound
34. compound
34. mixture of elements and compounds
I don't recognize this problem, please make sure the input is complete.
Metals consist of giant structure of atoms arranged in a regular pattern. The electrons in the outer shell of metal atoms are shared , and are free to move throughout the structure. Therefore the structure is formed by positive charged metal ions held together by a 'sea' of delocalised.
