EASY
MYP:4-5
IMPORTANT
Earn 100

The graph below shows the nuclear radius of some nuclei in femtometers (1 fm=1×10-15 m)

Question Image

Draw a line of best fit on a copy of the graph.

Important Questions on Models

EASY
MYP:4-5
IMPORTANT

The graph below shows the nuclear radius of some nuclei in femtometers (1 fm=1×10-15 m)

Question Image

Use the graph to predict the radius of a nucleus of tungsten-184.

 

EASY
MYP:4-5
IMPORTANT

A model of the nucleus called the liquid drop model suggests that the volume of a nucleus is directly proportional to the number of protons and neutrons in it.

A graph of the volume of nuclei against mass number is shown below.

Question Image

Using your value of the radius of tungsten-184 from the first graph, calculate the volume of this nucleus. (Assume that the nucleus is a sphere).

 

EASY
MYP:4-5
IMPORTANT

A model of the nucleus called the liquid drop model suggests that the volume of a nucleus is directly proportional to the number of protons and neutrons in it.

A graph of the volume of nuclei against mass number is shown below.

Question Image

How would you classify the trend of this graph?

EASY
MYP:4-5
IMPORTANT

A model of the nucleus called the liquid drop model suggests that the volume of a nucleus is directly proportional to the number of protons and neutrons in it.

A graph of the volume of nuclei against mass number is shown below.

Question Image

Add volume of tungsten-184 to this graph.

HARD
MYP:4-5
IMPORTANT

A model of the nucleus called the liquid drop model suggests that the volume of a nucleus is directly proportional to the number of protons and neutrons in it.

A graph of the volume of nuclei against mass number is shown below.

Question Image

Discuss whether the liquid drop model of the nucleus appears to be a good model. You should refer to the graph in your answer.

HARD
MYP:4-5
IMPORTANT
The experiment described in the section can be described as nuclear physics since it is the study of the nucleus. However, the words "nuclear" and "atomic"are sometimes thought to refer to nuclear weapons and can cause fear as a result. Write a short paragraph explaining the structure of an atom without using the words "nuclear" or "atomic".
HARD
MYP:4-5
IMPORTANT
Our increased knowledge of the structure of the atom and its nucleus has been a significant advance in scientific understanding. Identify the benefits and limitations that these scientific advances have brought us and justify whether this progress has been beneficial to humankind.