GROUP #3

BORON

• Atomic #5
• Atomic mass 10.81
• It's a metalloid
• State of matter at room temp is a solid
• Boron was discovered by Joseph-Louis Gay-Lussac an Louis-Jaques Thénard.

ALUMINUM

• Atomic #13
• Atomic mass 26.98
• It's a metal
• State of matter in room temp is solid
• Aluminum is also known as "Al"
• Aluminum was discovered by Hans Christian Østred.

GALLIUM

• Atomic #31
• Atomic mass 69.72
• It's a metal
• State of matter at room temp is a liquid
• Gallium is also known as "Ga"
• Gallium was discovered by Paul-Émile Lecoq de Boisbaurdran.

INDIUM

• Atomic #49
• Atomic mass 114.8
• It's a metal
• State of matter in room temp Is a solid.
• Indium is also known as "In"
• Indium was discovered by Ferdinand Reich.

1.) Why can't aluminum be put inside a microwave?

2.) What "real world" product(s) is the Indium element used in?

3.) What element, from B-13, is only flammable when combined with oxygen?

4.) How is the element Gallium used to create a mirror?

5.) Flares that cast off a green color, used as an igniter for rockets, and used in Borax laundry detergent, are made of what element?

Untitled Slide

http://www.countriesintheworld.com/boron-as-a-chemical-element.html.
http://theodoregray.com/periodictable/Samples/013.2/index.s12.html
https://en.m.wikipedia.org/wiki/Gallium
http://www.5nplus.com/index.php/en/products/pure-metals/indium