Periodic table

Question 1

Group 1 of periodic table

Answer 1

-Melting point decreases down the group
-Reactivity decreases down the group
-Density increases down the group
-They are alkali metals, soft and low MP and low density

Question 2

Group 18 of the periodic table

Answer 2

Noble gases
MP/BP increases down the group
No reaction as they are already stable

Question 3

What are isotopes

Answer 3

An element with more than one form of different number of neutrons but same number of protons and electrons

Question 4

Group 17

Answer 4

-Halogens
-BP/MP increases down the group
-reactivity decreses down the group(displacement)

Question 5

When ionic bonding and covalent bonding happend

Answer 5

ionic - metals and non metals
covalent - non metals and non metals

Question 6

What happens when more reactive element reacts with less reactive element

Answer 6

Displacement. More reactive element displaces less reactive element