BPA, or bisphenol A, is in most plastics and it is toxic to humans because it can bind to the estrogen hormone and greatly alter your body's natural functions from there. It can also bind to your thyroid hormone.
Gold has 79 protons on the periodic table
Answer:
physical property
Explanation:
it is physical so is any melting and boiling point
The mass is conserved, so it stays the same, 450g