Scientists are working with a liquid that is made of only one type of atom. Which statement correctly describes this liquid? A)The liquid contains only one compound. B)The liquid contains only one element. C)The liquid contains only neutral electrons. D)The liquid can be broken down into simpler substances.

Bridget is in science class. her teacher gives her two unknown substances and asks her to determine their relative ph. she places a piece of red litmus paper into both substances. the litmus paper turns purple when she places it into substance i. the litmus paper turns blue when she places it into substance ii. a. substance i is a neutral substance and substance ii is an acid. b. substance i is a neutral substance and substance ii is a base. c. substance i is an acid and substance ii is a base. d. substance i is a base and substance ii is a neutral substance.