Little knowledge is dangerous. Your physics is of grade 8 level and you do not read news.
1. Satellite can fall on the earth depending upon their mass and orbit decay. Remember skylab?
2. It is a question of definition. Any body an carry whatever it wants - it depends upon the need. If the satellite needed power for maneuvering, it could have had fuel. in fact a lot of satelites have positioning rockets for final alignment - although the fuel is few kgs.
3. Hahaha, if combustion does not happen in outer space, how did rover reach Mars? Rockets carry oxidizing agents (in case of solid fuel) or liquid hydrogen to make combustion possible. Next you will say combustion is not possible below sea level as there is no available oxygen. 4. Satellite in question was launched less than a year ago. Satellites weighing 2000 kgs are routinely launched in space. Tat is approximate weight of a school bus. 5. Again, toxic chemical here in question is fuel. However, your pointv about gold is correct.
