2. Is the hydrogen peroxide and yeast chemical reaction an endothermic or exothermic reaction? Use data and observations
as evidence to support your answer.

It took energy to break the hydrogen peroxide apart and energy was released when the oxygen and water were formed. Since more energy was released in this reaction, the temperature went up. This reaction is called an exothermic reaction.

Explanation:

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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