Atomic Structure P2

Question 1

What was the Ancient Greeks idea of Elements?

Answer 1

Earth, Fire, Water and Air

Question 2

What did JJ Thompson discover in Atomic Structure?

Answer 2

JJ Thompson invented the ‘Plum pudding model,’ which believed that negative electrons were stuck inside of a positive dough.

Question 3

What did Rutherford discover in Atomic Structure?

Answer 3

That a positive nucleus was in the centre, surrounded by empty space/electrons.

Question 4

What did Bohr discover in Atomic Structure?

Answer 4

Electrons are in different energy levels/shells around the nucleus.

Question 5

What is an element ‘defined’ by?

Answer 5

The Atomic Number

Question 6

What is an Isotope?

Answer 6

A different form of the same element. Has the same amount of protons but different amount of neutrons.

Question 7

What are Ions?

Answer 7

Charged particles

Question 8

How are Ions formed?

Answer 8

Ions are formed when atoms gain or lose electrons.

Question 9

If the number of protons/electrons are not the same, what do Ions become?

Answer 9

Positive/negative