4. A pure coin is made up of billions of silver atoms. The atoms are made
up of subatomic particles including protons, neutrons and electrons. Which of the
following is true about the mass of the coin? (8.5A)
F The mass of the coin comes from the amount of space it takes up divided by the
number of particles.
G Protons and neutrons have much more mass than electrons, and make up most
of the total mass.
H Neutrons have a neutral mass; therefore only protons and electrons contribute
to the total mass.
J The mass is split evenly between the three types of particles.
My answer is A
i think your right.
Two notes.
I see only answers F, G, H, J. I don't see A.
Second, most coins are NOT silver. The "old" dime was 90% silver and 10% copper in the old days but not anymore.
A. The mass of the coin comes from the amount of space it takes up divided by the number of particles.
To arrive at this answer, we need to understand the composition of the coin. The passage states that the coin is made up of billions of silver atoms, which are in turn made up of subatomic particles such as protons, neutrons, and electrons.
Option F states that the mass of the coin comes from the amount of space it takes up divided by the number of particles. However, this is not true. The mass of an object is determined by the total mass of its constituent particles, not by the volume it occupies.
Option G states that protons and neutrons have much more mass than electrons and make up most of the total mass. This is correct. Protons and neutrons are located in the nucleus of an atom and are much more massive compared to electrons, which orbit the nucleus. Therefore, the majority of the mass of a silver atom and consequently, the coin, is contributed by protons and neutrons.
Option H states that neutrons have a neutral mass, and therefore only protons and electrons contribute to the total mass. This is incorrect. Neutrons have mass and contribute to the total mass of an atom. So, this option is not true.
Option J states that the mass is split evenly between the three types of particles. This is also not true. As mentioned earlier, protons and neutrons contribute the majority of the mass, while electrons contribute a much smaller fraction.
Based on the above analysis, the correct answer is G. Protons and neutrons have much more mass than electrons, and make up most of the total mass.