Periodic Table

Question 1

What happens when Lithium, sodium and potassium are put in water?

Answer 1

Lithium - move around the surface, fizzing furiously
Sodium and potassium - do the same but melt in the reaction’s heat. Potassium ignites the hydrogen gas being produced

Question 2

What’s the word equation for sodium and water?

Answer 2

Sodium + water –> Sodium hydroxide + hydrogen

Question 3

What are group 1 metals known as?

Answer 3

Alkali Metals

Question 4

What are some characteristics of the Alkalis?

Answer 4

Very reactive
Easily cut
Very soft
Low melting point
(conducts electricity - similar to other metals)

Question 5

How do you calculate relative atomic mass?

Answer 5

(mass number a x isotope abundance a) + (mass number b x isotope abundance b)
divided by
Isotope abundance a + b

Question 6

What’s an isotope?

Answer 6

Atoms of the same element with the same number of protons and a different number of neutrons