Experiments , Alpha Scatter, Polymers

Question 1

What was the expectation of the alpha particle scatter experiment and how did it prove that the plum pudding model was incorrect?

Answer 1

• expected alpha particles to pass straight through the gold sheet or only be slightly deflected due to the spread out positive charge of the plum pudding model
• plum pudding model proven wrong as some alpha particles were deflected more than expected and some deflected backwards proving that the plum pudding model wasn’t entirely positive
• as some particles were deflected backwards, meant a higher concentration of positive particles in one area

Question 2

What are polymers?

Answer 2

Long chains of repeating units connected by large intermolecular forces

Question 3

What are macromolecules?

Answer 3

Giant covalent structures