In a chemical reaction, there is a change in the composition of the substances in question; in a physical change there is a difference in the appearance, smell, or simple display of a sample of matter without a change in composition.
Answer:
a lot more than you can eat your green beans
Answer:
Blue
Explanation:
Blue would have the longest wave length because following ROY G BIV the wave length distance between the two decreases as you move from Red to Violet.
I am not sure but I think it might be A) 6. Sorry if it is not correct because I am not good at chemistry, Hope this helped! :)