Introduction
The atomic nucleus is the small, dense region at the center of an atom, discovered in 1911 by Ernest Rutherford. The nucleus itself is made up of neutrons and protons, collectively called nucleons. The nucleus, though small, contains most of the atom's mass.
The number of protons in the nucleus determines the atom's atomic number and its position in the Periodic Table.
In this lesson you will learn more about oil refinery process, as well as complete a task about this topic to test your knowledge. Good luck!
Task
To test your knowledge and teach you new things about the atomic neclues, you will be given a simple test of 10 questions.
To answer these questions you will need to watch this video.
Process
1) What does the nucleus consist of?
- neutrons
- protons
- both
2) Which elements can fuse together during a stars normal lifespan?
- elements that are lighter than iron
- elements that are heavier than iron
- all elements
3) What is nuclear fission?
- nucleus combining
- nucleus splitting
- an explosion
4) In what cases is a controlled chain nuclear fission used?
- in nuclear bombs
- in power plants
- it is not used
5) What does an electron emit when it drops to a lower energy level?
- proton
- neutron
- photon
6) What is a gamma ray?
- photon generated by the nucleus
- electron generated by the nucleus
- proton generated by the nucleus
7) What happens when a neutron bounces off the nucleus?
- a photon is emitted
- it is placed in an excited energy state
- nothing
8) In what state are neutrons more likely to be absorbed?
- when they are faster
- when they are slower
- they cannot be absorbed
9) What happens to a neutron when it bounces off the nucleus of an atom?
- it slows down
- speed remains intact
- it increases its speed
10) When is a nucleus more likely to decay?
- when it is stable
- when it absorbs a neutron
- when it is unstable
Evaluation
Congratulations, you have finished your task. Here are the correct answers to the questions, so you can check how many you got right and if you got something wrong, you can go back to the video, rewatch it and see what you missed.
1) What does the nucleus consist of?
- both
2) Which elements can fuse together during a stars normal lifespan?
- elements that are lighter than iron
3) What is nuclear fission?
- nucleus splitting
4) In what cases is a controlled chain nuclear fission used?
- in power plants
5) What does an electron emit when it drops to a lower energy level?
- photon
6) What is a gamma ray?
- photon generated by the nucleus
7) What happens when a neutron bounces off the nucleus?
- it is placed in an excited energy state
8) In what state are neutrons more likely to be absorbed?
- when they are slower
9) What happens to a neutron when it bounces off the nucleus of an atom?
- it slows down
10) When is a nucleus more likely to decay?
- when it is unstable
Conclusion
Now we have come to the end of this lesson, hope you were successful at completing the task, if you have any questions, be sure to ask them or rewatch the video and see what you missed!