If you mean Gun shot residue, then yes he was. But back in those days in 1963 the actual test was called a parrafin test, and back then in 1963 parrafin tests were not reliable. they simply did not have the technology we have today.
yes
Sulfur powder tends to burn more easily than paper, charcoal, or even matchsticks.
Neptunium as a powder is pyrophoric.
yes if it is spicy
Sam and Friends - 1955 Powder-Burn 1-6 was released on: USA: 1956
Eischied - 1979 Powder Burn 1-12 was released on: USA: 20 January 1980
Silk Stalkings - 1991 Powder Burn 1-20 was released on: USA: 26 March 1992
The chemical equation is:S + O2 = SO2
At a dealer.
Although baking powder can help smother or cool small grease or cooking fires, Baking powder can also cause other fires to get larger or create an explosion.
"firework powder" is usually gun powder or blackpowder... So yes both of these options can be used in cannons, but don't mix blackpowder with gun powder since they burn at different rates.
magnesium oxide 2 Mg + O2 = 2 MgO