Periodic Table

Question 1

Describe the arrangement of the elements in the periodic table

Answer 1

Mendeleev arranged the elements so that elements which shared similar properties fell into the same group

Question 2

Describe trends in the periodic table

Answer 2

Reactivity increases I metals as you go across the period.
Reactivity increases as you down the metals groups
In gases reactivity increases up the group
Reactivity increases across period

Question 3

Describe how metallic and non metallic character of the elements change across a period

Answer 3

Metallic character decreases as you move across a period in the periodic table from left to right. This occurs as atoms more readily accept electrons to fill a valence shell than lose them to remove the unfilled shell. Metallic character increases as you move down an element group in the periodic table

Question 4

Why are noble gases unreactive

Answer 4

They have full valence shells

Question 5

Physical and chemical properties of group 1 metals

Answer 5

• very reactive with water
• produces alkali and hydrogen gas
• more reactive as you go down the group

Question 6

Typical properties of transition metals

Answer 6

Generally dense

Form brightly computer compounds