Answer: Ions are defined as atoms that have lost or gained an electron and have a charge.
Explanation: Ions are charged atoms. Ions can be negative or positive. When an atom looses one or more electrons, it becomes positively charged and a positively charged atom is called a cation. When an atom gains one or more electrons it becomes negatively charged and a negatively charged atom is called an anion.
I think just the chest and some parts of the shoulders
As materials move from higher to lower concentration diffusion is occurring.
