Exploring Chemistry Chapters 1-3

Question 1

Goodyear discovered vulcanized rubber when he

Answer 1

heated sulfur with raw rubber

Question 2

The Middle Ages are also known as the _______________ Ages.

Answer 2

Dark

Question 3

The single most important compound of sulfur is _______________ acid.

Answer 3

sulfuric

Question 4

How does carbon from charcoal help during the smelting process?

Answer 4

frees iron from oxygen’s grip by combining with the oxygen

Question 5

Ancient people made musical instruments of

Answer 5

copper alloy

Question 6

Which of these forms of iron is the purest?
cast iron, charcoal, steel, or wrought iron

Answer 6

wrought iron

Question 7

Ancient people hammered the soft, pure iron from _______________ into useful tools.

Answer 7

meteorites

Question 8

Charcoal is

Answer 8

wood that has been heated without oxygen

Question 9

The Royal Society was formed to

Answer 9

communicate new ideas rapidly

Question 10

The first metal mentioned in both the Old and New Testaments is

Answer 10

gold

Question 11

Gold, silver, and _______________ are known as the coinage metals.

Answer 11

copper

Question 12

The seven ancient metals are gold, silver, copper, iron, tin, lead, and _______.

Answer 12

mercury

Question 13

Bronze and brass are both alloys that contain

Answer 13

copper

Question 14

The element that charcoal, coal, graphite, and diamond have in common is ___.

Answer 14

carbon

Question 15

The Statue of Liberty has a skin of

Answer 15

copper

Question 16

Another name for mercury is

Answer 16

quicksilver

Question 17

Cast iron, steel, and wrought iron differ only in the amount of ____ they contain.

Answer 17

carbon

Question 18

Steel is quenched by

Answer 18

heating it in an oven for several days

Question 19

Is 14-karat gold pure gold?

Answer 19

no

Question 20

What was the primary goal of alchemist?

Answer 20

to make gold from cheap metals.

Question 21

Hydrogen is an ____ element on earth.

Answer 21

abundant