CHROMIUM

CHROMIUM

• Chromium is a chemical element
• On the periodic table, its symbol is Cr
• Its atomic number is 24

HISTORY

• Chromium was discovered by Louis-Nicholson Vauquelin
• It was discovered in Siberian red lead in 1797
• He obtained metallic chromium by heating chromium oxide

FACTS

• The word chromium comes from the Greek word Chroma
• Chromium compounds are toxic and should be handled with care
• Chromium can form many colorful compounds

FACTS

• Chromium is in group 6 of the periodic table
• Its density is 7.15 grams per cubic centimeter
• Chromium is a blue-white color and brittle

USES

• Chromium can be polished and used to form a shiny surface
• It can be added to steel to harmed it and to form stainless steel
• It can also be used to make armor plates, safes and cutting tools

CHROMIUM

• Chromium is a metal
• Its atomic number is 24
• On the periodic table, its symbol is Cr

HISTORY

• It was discovered in 1797, by Louis-Nicolas Vauquelin
• It was found in a material known as Siberian lead
• It was found by heating Chromium Oxide

FACTS

• Chromium is a blue-white colored metal
• It is hard, brittle and very resistant
• It can form many colorful compounds

FACTS

• Chromium is very toxic and should be handled with care
• Is is considered a transit metal
• It is in group 6 on the periodic table

USES

• Chromium is added to steel to harden it
• When hardened, it forms a stainless steel
• It is also used to make armor plates, safes and cutting tools