EL 1

Question 1

What is the equation for finding the relative atomic mass of an element?

Answer 1

RAM= Relative isotopic mass x relative abundance

divide by mass of 1 atom= mass

Question 2

What is the trend for the atom sizes as you go across the period?

Answer 2

They get smaller

Question 3

Where would the largest atom be?

Answer 3

Francium (bottom of G1 or 2)

Question 4

Where would the smallest atom be?

Answer 4

Noble gases like Neon etc

Question 5

What happens as you go down the group apart from the obvious ones…

Answer 5

The energy levels get added

Question 6

What is the pattern for protons as you go across the periods

Answer 6

They increase in the nucleus

Question 7

As you go across the period what happens to the hardness of metals? What happens as you reach the non metals?

Answer 7

It increases up until silicon, afterwards become more soft until the gas

Question 8

Give an example of a base

Answer 8

Mg(OH)2

Question 9

Give an example of an alkali

Answer 9

NaOH

Question 10

Give an example of an acid

Answer 10

H3PO4

Question 11

What is the empirical formula?

Answer 11

The simplest whole number ratio

Question 12

How do you work out percentage yield?

Answer 12

%= Actual/theoretical yield x 100