1. The Boron Family
This family includes: Boron, Aluminum, Gallium, Indium, and Thallium.

2. Boron (B)

3. Physical Properties of Boron
Boron is a shiny, black metalloid
Metalloids have both the properties of a metal and a non- metal
It a poor conductor of electricity at low temperatures but a great conductor of electricity at high temperatures
It is a pure substance meaning it is made up of one type of atom

4. Physical Properties of Boron
It has a high melting point ranging from to degrees Celsius
When it is a solid, boron can be as hard diamonds
Even though it is very hard, it is still too fragile for useful purposes

5. Chemical Properties of Boron
Boron can combine with oxygen to form boron trioxide (B2O3)
When it is in powder form, it reacts with hot nitric acid (HNO3) and hot sulfuric acid (H2SO4)
It also dissolves in molten metal

6. Aluminum (Al)

7. Physical Properties of Aluminum
Aluminum is soft, lightweight, silvery, metal
It is a great conductor of electricity
It has a melting point of 660 degrees Celsius
It has a boiling point ranging between degrees Celsius
Its density is grams per cubic centimeter

8. Physical Properties of Aluminum
It is both ductile and malleable
Ductile means “capable of being pulled into thin wires”
Malleable means “capable of being hammered into thin sheets”

9. Chemical Properties of Aluminum
In moist air, it gradually combines with oxygen to form aluminum oxide
Reacts with many hot acids and alkalis
Alkalis is a chemical with the opposite properties of an acid
Aluminum also reacts with hot water and in powdered form, it catches on fire

10. Gallium (Ga)

11. Physical Properties of Gallium
Gallium is soft, silvery, shiny metal
Conductor of electricity
But unlike a regular metal, it is so soft it can melt in the palm of your bare hand
It has a very low melting point at degrees Celsius

12. Physical Properties of Gallium
Gallium can be cooled really easily into a solid but it can still be cooled below degrees Celsius without turning into a solid

13. Chemical Properties of Gallium
Gallium can combine with most non-metals at high temperatures
It reacts to both acids and alkalis

14. Indium (In)

15. Physical Properties of Indium
Indium is a silvery, shiny metal
Conductor of electricity
Has a density of grams per centimeter
It is so soft, if rubbed on paper, it leaves a mark like lead
It generates a brief screech when bent
Has a melting point of degrees Celsius

16. Physical Properties of Indium
It has a boiling point of 2075 degrees Celsius
Even though at really low temperatures, gallium can still be very soft. This property allows gallium to be used below the temperatures of Absolute Zero

17. Thallium (Tl)

18. Physical Properties of Thallium
Thallium is a bluish- white metal
Thallium resembles lead and can be used like lead too
It is also soft enough to be cut with a knife
It can melt fairly easily and has a melting point of 302 degrees Celsius
Has a boiling point of 1456 degrees Celsius
It also has a density of grams per centimeter

19. Chemical Properties of Thallium
Thallium reacts with acids
It also reacts with oxygen too and when exposed to air, it forms a thin coating of thallium oxide (TL2O)

20. THAT’S ALL FOLKS!!!
By John and Khadija

21. … And Robert