Chapter 2

Question 1

As you go down In group 1 reactivity ________

Answer 1

Increases

Question 2

Reactivity increases as you go down group 1 because

Answer 2

Atoms increase in size
Outer electrons is further from the nucleus
More shells shielding the outer electrons
Electrostatic attraction gets weaker
So easier to loose outer electrons

Question 3

Reactivity decreases as you go down group 7

Answer 3

Atoms increase in size
Outer electrons are further from the nucleus
More shells shielding the outer electrons
Electrostatic attraction gets weaker
So easier to gain outer electrons

Question 4

why was newlands periodic table not accepted

Answer 4

Wasn’t a well known scientist

Question 5

how was Mendeleev’s periodic table different

Answer 5

He placed them in order of their atomic weight

Question 6

name 3 properties of group 1 metals

Answer 6

Low density
They are soft
Very reactive

Question 7

name 3 properties of halogens

Answer 7

Poisonous & smelly
Do not conduct electricity
Brittle