11. Which of the following best describes the term acidic oxide? A. An oxide which when combined with water gives off an acid B. An oxide which when combined with water gives off a base. C. When a substance reacts chemically, both as a base or acid D. One which neither has an acidic characteristic or a or a basic one. 12. Which of the following best describes the term oxide? A. Those substances which have hydrogen atom in them B. Binary compounds formed by the reaction of oxygen with other elements. C. Compounds which are reactive D. Compounds which are combustible e
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