Exploring Chemistry Chapter 1 Flashcards
1
Q
Ancient people hammered the soft, pure iron from _______________ into useful tools.
A
meteorites
2
Q
Cast iron, steel, and wrought iron differ only in the amount of ____ they contain.
A
carbon
3
Q
Charcoal is
A
wood that has been heated without oxygen
4
Q
Which of these forms of iron is the purest?
cast iron, charcoal, steel, or wrought iron
A
wrought iron
5
Q
Steel is quenched by
A
heating it in an oven for several days
6
Q
How does carbon from charcoal help during the smelting process?
A
frees iron from oxygen’s grip by combining with the oxygen
