When fat comes in contact with sodium hydroxide, it produces soap and glycerin. Determine whether this is a physical change or a chemical change. Explain your

Chemical change

Explanation:

A physical change is defined as the change in which a change in shape, size takes place. No new substance gets formed in these reactions.

A chemical change is defined as the change in which a change in chemical composition takes place. A new substance is formed in these reactions.

Thus when fat comes in contact with sodium hydroxide to produce soap and glycerin, it is termed as a chemical change.

considering the question as per the attachment

here we can see that the radon nuclide has 222 as the atomic mass number and 86 as the atomic number.

when it undergoes nuclear fission it gives polonium which has atomic mass number as 218 and atomic number will be 84 along with a helium nucleus which has 4 atomic mass number and 2 as its atomic number.

222 = 218 + 4 (atomic mass number)

86 = ? + 2; therefore ? = 86-2 = 84.

the atomic mass number of polonium will be 84.