C1b- atomic structure and the periodic table

Question 1

metals (6)

Answer 1

Form positive ions
Conductors
High melting point
High boiling point
Ductile
Malleable

Question 2

non- metals (4)

Answer 2

Form negative ions
Insulators
Low melting points
Low boiling point

Question 3

group 7 (4)

Answer 3

HALOGENS
Melting and boiling points increase down the group
Reactivity decreases down the group
atomic mass gets heavier as you go down

Question 4

group one (2)

Answer 4

ALKALI METALS
very reactive with oxygen, water and chlorine
reactivity increases as you go down the group

Question 5

group 0 (2)

Answer 5

NOBLE GASES
very unreactive and don’t form molecules- they already have a full outer shell
They are all gases but their boiling point increase as you go down the group

Question 6

transition metals (2)

Answer 6

Compared to group one metals, the transition metals are less reactive,harder, denser and have higher melting points.
Some special properties of transition metals include: forming ions with different charges, acting as catalysts etc.

Question 7

Before the discovery of protons

Answer 7

Elements used to be arranged in order of atomic weight

Question 8

What did Mendeleev do?

Answer 8

Left gaps for undiscovered elements