An atomic bomb uses fission-- the splitting of atoms. It is purely a physical change, at first. Any gases produced in the air surrounding the explosion (which occurs before it touches the ground), along with the intense heat produced, causes chemical changes in the air.
nope, its Chemical bro
It is usually a chemical change.
No, it is a chemical change.
physical
chemical change
This is a physical change. Water can take on 3 forms, ice, gas, and liquid. These would be changes in state. Tearing, scratching, crushing, change in state, are all physical changes. Chemical changes must change the substance, not just the appearance. (i.e. Burning fire into ashes, fireworks exploding...)
Physical change: Water freezing into ice Chemical change: Water being broken down into hydrogen and hydroxide ions after the addition of a pure metal.
Physical change of the paint, not the door.
this is a physical change
Its a physical change
It is usually a chemical change.
Dynamite exploding is a chemical change called combustion.
no its a chemical reaction
It is a chemical change.
Yes because it cannot change back.
physical
it is a chemical change
Work of an atomic bomb is a physical process.
Dissolving and fizzing are physical processes.
Fuel exploding is a violent Chemical Reaction when fuel is reacted with atmospheric oxygen.
exploding fireworks
I guess it is a chemical change as the exploded fireworks cant be regained back which is possible in a physical change and not in a chemical change.