Stimulation Web

 Instruction

 Group 1and 4 will focus on Group 1 of periodic table

group 2 and 5 will focus on group 7 of periodic table

Group 3 will focus on group 0 of periodic table

Group 1 Metals

 group 1 of the periodic table is called  alkali metals. They have similar properties, such as being shiny and good conductors of electricity. Group 1 metals typically have lower melting and boiling points than other metals.

These are the trends of the group 1 metals as you move down the group:

• Melting and boiling points decrease

• Relative atomic mass increases

• Reactivity increases

Group 7:

The elements in group 7 of the periodic table are called halogens. They are all non-metals and have similar properties. The table below shows the properties of the first five halogens at room temperature.

Halogen	Melting point	Colour	Boiling Point	Atomic number	Mass number
Fluorine	-220	Yellow	-188	9	19
Chlorine	-101	Green	-34	17	35
Bromine	-7	Red-brown	59	35	80

These are the trends of the halogens as you go down the group:

• Melting and boiling points increase

• Relative atomic mass increases

• Reactivity decreases

• Colour becomes darker

 

Group 0

Element	Melting point	Colour	Boiling Point	Atomic number	Mass number
Helium	-270	Yellow	-269	2	4
Neon	-249	Green	-246	10	20
Argon	-189	Red-brown	-186	18	40

Group 0, also known as the noble gases, have a full outer shell of electrons, making them stable and unreactive.

These are the trends of group 0 elements as you go down the group:

• Melting and boiling point increase

• Relative atomic mass increases