Trends Within Periodic Table

Question 1

Elements in group 1 (alkali metals) properties

Answer 1

Low density- first 3 less than water

React with non metals to form ionic compounds- white solids that dissolve in water forming colourless

React with water releasing hydrogen

Form hydroxides that dissolve in water giving alkaline solutions

Question 2

What happens the further down you go I group 1

Answer 2

More reaction the element

Lower meting and boiling point

Question 3

Compared with group 1 elements, what are the transition elements properties

Answer 3

Higher melting point (except mercury) and higher density

Stronger and harder

Much less reactive - do not react as vigorously with water or oxygen

Question 4

What do many transition elements have

Answer 4

Ions with different charges

Form coloured compounds

Useful catalysts

Question 5

What do the halogens form when reacting with metals

Answer 5

Ionic compounds

Question 6

Group 7 properties as you go down the group

Answer 6

Less reactive

Higher melting and boiling point

Question 7

What happens when a more reactive halogen displace a less reactive halogen

Answer 7

Forms an aqueous solution of its salts

Question 8

How can trends in periodic table be explained

Answer 8

Higher energy level on outer electron/ more shells…

More easily electrons lost

Less easily electrons are gained