Question 1

Question

A)Which statement is always true when nuclear fusion occurs?(1 point)
Responses

The number of protons in the resulting nucleus is double that of a starting nucleus.
The number of protons in the resulting nucleus is double that of a starting nucleus.

The number of protons in the resulting nucleus is less than in each starting nucleus.
The number of protons in the resulting nucleus is less than in each starting nucleus.

The total number of protons and neutrons in each nucleus remains constant.
The total number of protons and neutrons in each nucleus remains constant.

The combined number of protons and neutrons remains constant.
The combined number of protons and neutrons remains constant.
Question 2
A)
Use the equation to answer the question.

21H+ 21H→ 42H+energy

Which statement best describes the mass numbers of the atoms in the reaction?

(1 point)
Responses

There are two atoms with mass numbers of 2.
There are two atoms with mass numbers of 2.

There is one atom with a mass number of 1.
There is one atom with a mass number of 1.

There is one atom with a mass number of 2.
There is one atom with a mass number of 2.

There are two atoms with mass numbers of 1.
There are two atoms with mass numbers of 1.
Question 3
A)Why would pushing the south pole of two magnets together provide a good model for the fusion of two hydrogen nuclei?(1 point)
Responses

If the nuclei fused, it would destroy both of them, just like the two magnets would be destroyed.
If the nuclei fused, it would destroy both of them, just like the two magnets would be destroyed.

The positive charges of the nuclei make it difficult for the nuclei to fuse, just like the repulsion of the two magnets.
The positive charges of the nuclei make it difficult for the nuclei to fuse, just like the repulsion of the two magnets.

Some nuclei repel each other, and some attract each other, just like magnets.
Some nuclei repel each other, and some attract each other, just like magnets.

Only negative nuclei can fuse with positive nuclei, just like the north and south poles of magnets.
Only negative nuclei can fuse with positive nuclei, just like the north and south poles of magnets.
Question 4
A)How is the mass number calculated for an atom involved in nuclear fusion?(1 point)
Responses

It is the number of protons plus electrons.
It is the number of protons plus electrons.

It is the number of neutrons.
It is the number of neutrons.

It is the number of protons plus neutrons.
It is the number of protons plus neutrons.

It is the number of electrons.
It is the number of electrons.
Question 5
A)Which change will always take place in nuclear fusion?(1 point)
Responses

The total charge will be greater than before the fusion took place.
The total charge will be greater than before the fusion took place.

The total charge will be less than before the fusion took place.
The total charge will be less than before the fusion took place.

A nucleus with a smaller mass than any of the reactants will be produced.

Answer 1

Here are the best responses to each question based on the principles of nuclear fusion:

Question 1: A) Which statement is always true when nuclear fusion occurs?

• Response: The number of protons in the resulting nucleus is less than in each starting nucleus.

Question 2: A) Use the equation to answer the question. \[ ^2_1H + ^2_1H → ^4_2H + \text{energy} \] Which statement best describes the mass numbers of the atoms in the reaction?

• Response: There is one atom with a mass number of 2.

Question 3: A) Why would pushing the south pole of two magnets together provide a good model for the fusion of two hydrogen nuclei?

• Response: The positive charges of the nuclei make it difficult for the nuclei to fuse, just like the repulsion of the two magnets.

Question 4: A) How is the mass number calculated for an atom involved in nuclear fusion?

• Response: It is the number of protons plus neutrons.

Question 5: A) Which change will always take place in nuclear fusion?

• Response: A nucleus with a smaller mass than any of the reactants will be produced.

Let me know if you have any further questions or need additional information!