Explosions Flashcards
(8 cards)
1
Q
what are explosions
A
very fast reactions that give out a lot of heat and produce lots of gases
2
Q
what produces an explosive mixture with oxygen
A
natural gas
3
Q
what is a combustion explosion
A
fuels such as natural gas can produce an explosive mixture with oxygen
4
Q
what are explosives
A
chemicals that often contain all the oxygen they need to react inside the chemical.
5
Q
how can explosives react
A
by decomposition as they do not need any oxygen from the air
6
Q
what is special about some explosives, such as nitro glycerine
A
they are very unstable ad will react with only a tiny amount of added energy
7
Q
when will a safer explosive, like dynamite, react
A
when a detonator is used
8
Q
what are explosives used for
A
weapons, quarrying rock, building roads and demolishing old buildings
