Which phrase describes a nuclear chain reaction?(1 point) a reaction in which particles spontaneously emit radiation

a series of reactions in which particles from one reaction trigger the next reaction

a type of reaction which only takes place in the sun and other stars

a reaction in which small nuclei combine into a larger nucleus

a reaction in which small nuclei combine into a larger nucleus

a series of reactions in which particles from one reaction trigger the next reaction

Explanation:

cause thats a chain

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.