Answer:
B.
Explanation:
This is physical change as the popcorn has expanded in size.
Valency is the number of electrons lost or gained by an atom to attain an stable configuration. Valency is important when writing the formula of chemical compounds in chemistry. Strontium has a valency of 2 while sulfite ion (radicle) has a valency of 2. Therefore, the chemical formula of strontium sulfite is written as SrSO3.
Answer:
Hopefully its true, its seem like true. I think its true. Sorry if i'm wrong
Explanation: