1. Presented By: Jacob Thurston

2.  Oxygen gas or liquid  Colorless gas; pale blue liquid.  Represented by O

3.  Hydrogen gas (dihydrogen or molecular hydrogen) is highly flammable and will burn in air at a very wide range of concentrations between 4% and 75% by volume.

4.  represented by the symbol He. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas that heads the noble gas group in the periodic table.

5.  Gold is a dense, soft, shiny, malleable and ductile metal. Pure gold has a bright yellow color and luster traditionally considered attractive, which it maintains without oxidizing in air or water.

6. Silver  A soft, white, lustrous transition metal, it has the highest electrical conductivity of any element and the highest thermal conductivity of any metal.

7.  It is a ductile, semi-precious metal with very high thermal and electrical conductivity. Pure copper is soft and malleable; an exposed surface has a reddish-orange tarnish.

8. It has a low density and is a strong, lustrous, corrosion- resistant (including sea water, aqua regia and chlorine) transition metal with a silver color.

9.  It is a silvery-white lustrous metal with a slight golden tinge. Nickel belongs to the transition metals and is hard and ductile.

10.  It is a rare and lustrous silvery-white metal. Palladium has the lowest melting point and is the least dense.

11.  It is a dense, malleable, ductile, precious, gray- white transition metal. Even though it has six naturally occurring isotopes, platinum is one of the rarest elements in the Earth's crust.

12. Iridium A very hard, brittle, silvery-white transition metal of the platinum family, iridium is the second-densest element (after osmium) and is the most corrosion- resistant metal, even at temperatures as high as 2000 °C.

13. Mercury  It is also known as quicksilver or hydrargyrum.  A heavy, silvery d-block element, mercury is the only metal that is liquid at standard conditions for temperature and pressure.

14. It is found naturally only in chemically combined form. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal.

15.  It is a metal in the first transition series. It is the most common element in the whole planet Earth, forming much of Earth's outer and inner core, and it is the fourth most common element in the Earth's crust.

16. Lithium a soft, silver-white metal that belongs to the alkali metal group of chemical elements.