C2 Peridic Table And Groups

Question 1

How is a modern periodic table ordered

Answer 1

A modern periodic table is ordered in atomic proton number, with similar elements being groupes together e.g group 1

Question 2

How are chemical properties determined of an element

Answer 2

The chemical properties are determined by the number of electrons in the elements outer shell

Question 3

Why are noble gases (group 0 ) unreactive

Answer 3

As they have a full outer electron shell

Question 4

How do metal atoms become stable

Answer 4

Metal atoms become stable by by losing electrons to form positive ions, but non metal atoms gain electrons to form negative ions

Question 5

What does the group number show

Answer 5

The number of electrons in the outer shell of an element

Question 6

What type of elements are in group 1

Answer 6

Alkali metals

Question 7

What are some features of alkali metals

Answer 7

These elements are very reactive with water, air and everything so they are stored in oil which keeps water and air away from them

Question 8

What are the physical properties of alkali metals

Answer 8

Melting and boiling points decrease as you go down the group

Question 9

What are other properties of alkali metals

Answer 9

They have a very low density for metals making them very soft