Answer:
chemical change
Explanation:
because physical is like if something is happening inside your body
BTW
I hope this helps
Answer:
A. It formed by barium(Ba+2) ion and sulfate ( SO42- )
B. It is formed by calcium ion (Ca+2) and two fluoride ions (2F-)
C. It is formed by magnesium ion (Mg+2) and nitride ion (N3-)
D. It is formed by two potassium ions (2 K+) and oxide ion(O2-)
iron Presence of trace elements, irradiation and iron impurities give the gem amethyst its purplish color!
HCl = 1 + 35.5 => 36.5 g/mol
hope this helps!
I believe the answer is a
