7.
First element on the periodic table?
9.
Primary gas in Earth's atmosphere?
11.
First man on the moon?
12.
Chemical symbol for gold?
14.
Primary language of Brazil?
15.
Largest bone in the human body?
19.
Primary component of natural gas?
20.
First woman to win a Nobel Prize?
21.
Largest organ in the human body?
22.
Chemical symbol for salt?
23.
First element discovered by humans?
24.
Largest country by area?
25.
Primary language of Japan?
26.
Name of the first animal in space?
27.
Chemical symbol for iron?
