When a part rusts it becomes heavier or lighter?

Answer;

It becomes heavier.

- when a part rusts it becomes heavier due to addition of oxygen molecules.

Explanation;

-Rust is iron-oxide (hydrated iron (iii) oxide); a molecule consisting of iron and oxygen.

- When rust forms, the mass of the iron object is increased by the mass of oxygen that has combined with some of the iron and thus gains weight.

from the original order (top to bottom) the new order will go

1 (founder)

4 (hawk)

2 (mutate)

3 (next generation)

what's the