A student placed baking soda in a balloon and vinegar in a flask. After stretching the balloon over the flask, the student raised the balloon and dumped the baking soda into the flask. The
student immediately observed bubbles forming and the balloon began to expand.

(5 Points)
O a physical change only was occurring

the baking soda and vinegar were the products of a chemical reaction

the gas was oxygen

the bubbles indicated a chemical change was occurring
PLEASE HELPP

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

if you need further assistance, let me know: )

~ trueboss72

it’s previous models   because when i picked that son of a gun’s answer it was wrong look for previous models because they might make it a different letter