16. 2. Steel is harder than pure iron. This is because the atoms of steel are … A. more difficult to compress. B. More compact. C. More difficult to slide over one another. D. Smaller but heavier.
17. 2. Which of these are the properties of alloys? A. Ductile. B. Malleable. C. Ductile and malleable. D. Not ductile and not malleable.