Question

Question
1
Question
2
A)
Which statement is always true when nuclear fusion occurs?
(1 point)
The total number of protons and neutrons in each nucleus remains constant.
The number of protons in the resulting nucleus is less than in each starting nucleus.
The combined number of protons and neutrons remains constant.
The number of protons in the resulting nucleus is double that of a starting nucleus.
A)
Use the equation to answer the question.
Which statement best describes the mass numbers of the atoms in the reaction?
(1 point)
2H + H → H + energy
1 2
1 4
2
There is one atom with a mass number of 2.
There are two atoms with mass numbers of 1.
There is one atom with a mass number of 1.
There are two atoms with mass numbers of 2.
Question
3
Question
4
Question
5
A)
Why would pushing the south pole of two magnets together provide a good model for the fusion oftwo hydrogen nuclei?
(1 point)
Only negative nuclei can fuse with positive nuclei, just like the north and south poles of magnets.
The positive charges of the nuclei make it difficult for the nuclei to fuse, just like the repulsion of the twomagnets.
Some nuclei repel each other, and some attract each other, just like magnets.
If the nuclei fused, it would destroy both of them, just like the two magnets would be destroyed.
A)
How is the mass number calculated for an atom involved in nuclear fusion?
(1 point)
It is the number of protons plus electrons.
It is the number of electrons.
It is the number of neutrons.
It is the number of protons plus neutrons.
A)
Which change will always take place in nuclear fusion?
(1 point)
The total charge will be less than before the fusion took place.
A nucleus with a greater mass than any of the reactants will be produced.
The total charge will be greater 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 correct answers:

1) The combined number of protons and neutrons remains constant.

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

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

4) It is the number of protons plus neutrons.

5) A nucleus with a greater mass than any of the reactants will be produced.