Is ca + o --> cao a balanced chemical equation? is it obeying the law of conservation of matter? question 5 options: yes it is balanced. it has the same number of ca and o on both the reactant side and the product side. no it is not balanced. it has more ca on the product side than the reactant side. no it is not balanced it has more o on the reactant side than the product side.

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.