Kevin thinks that a new substance must have been formed when the baking soda mixed with the vinegar. To help support this idea, Kevin makes several observations about the flask, the balloon, and the substance inside the flask after the baking soda and vinegar
were mixed.
Which of these observations provides the best evidence that a new substance formed?
OA. The balloon is inflated.
OB. The balloon is red.
OC. There is liquid in the flask.
OD. The liquid in the flask is clear.

where's the diagram?

i think slash and

a corroding iron, if that's one of your choices

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.