Questions with the keyword 'substance'

• Everything is made of atoms, if there was a new substance made deep inside the earth’s core and it weren’t made of by littlemisstiger to Davie, Gemma, James P, James V, Nuala Comments: (So far, one comment )
• what substance/s that you have blown up made the loudest bang and why?? by hannahisawesome to Davie, Gemma, James P, James V, Nuala Comments: (No comments so far )