Which statements prove the law of conservation of matter (select all that apply) a) burning a piece of paper
b) sugar dissolving into water
c) cookie dough is baked into a cookie
d) water evaporating in the water cycle which is an open system

h let me think

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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that's what i got you can count the number of atoms