Which is not a step in most scientific investigations? 1. proving a theory and writing a new scientific law 2. observing and experimenting to test a hypothesis 3. developing a hypothesis to explain collected data 4. collecting data through observation and measurement

1. is not a step in most scientific investigations.

1. Proving a theory and writing a new scientific law

answer; /// i do believe that the correct answer is (a) boiling

it is to be noted that an alpha particle is an helium nucleus. so it contains 2 protons 2 neutrons and has a mass number of 4. when alpha decay particles are ejected from the nucleus it gets transformed into an atom which has atomic number less than 2 and a mass number less than 4.

an equation that could represent alpha decay is radium 226 decay of alpha particle forms radon 222.

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