9: A ballon can be a little because a reaction is releasing energy 10: is the most important molecule

11: there are only naturally occurring elements

12: when developing prints, light doesn’t affect the picture

13: Alfred Nobel invented .

14. A cold pack gets cold because the reaction take up/ more energy than it gives off

15: if chemicals work similarly, they are grouped on the periodic table of elements

Woah that’s a lot to read xd i’ll try though. i’ll get back t you if. i know the andwer

You would be correct, boiling water does disinfect contamination.    the property of disinfecting means to kill  germs, bacteria and other pathogens or contamination  that might cause an infection or cause a person to become sickly. a couple methods of disinfecting are using soap, other cleaning supplies or by simply "boiling" the contaminate.  the reason why boiling water disinfects certain attributes is because some cells cannot survive the heat and pressure.