What ions would the following elements form? Give the chemical symbol and the charge on the ion. [4] a. Rubidium RbBr b. Bromine

b. Barium BaSO4 d. Sulfur

Aphysical change is one that you can put in and remove like a ham sandwich. the stuff you put in there can be changem its not permanet. a chemical change is on that can't be change thats permanet. like when you make a cake and bake it. you can't get those ingredients back.

Its trait is different and it the organism survive