1.
Lightest element, fuels stars
3.
Soft metal in batteries
4.
Lightweight metal used in aerospace
5.
Metalloid in borax and detergents
6.
Basis of life, found in diamonds
7.
Makes up most of Earth’s atmosphere
8.
Essential for respiration
9.
Highly reactive halogen
10.
Noble gas glowing in signs
11.
Soft metal reacting violently with water
12.
Lightweight metal for alloys and fireworks
13.
Silvery metal used in cans and foil
14.
Semiconducting metalloid
15.
Essential for DNA and fertilizers
16.
Yellow element with a pungent smell
17.
Disinfecting halogen gas
18.
Noble gas used in lighting and welding
19.
Soft metal essential for plants and nerves
20.
Essential for bones and teeth
