The spontaneous decay of an atom is called transmutation
<span> A pure substance is a sample of </span>matter<span> with both definite and constant composition with distinct </span>chemical properties<span>. To avoid confusion, in chemistry a pure substance is often referred to as a "chemical substance".</span>
Answer:
second answer
Explanation:
The melting point would occur more quickly but stay the same.
So it is answer 2
I think a is the correct answer
