Do Different Materials with the Same Mass Have the Same Number of Protons?

[bolbol2054]

my question is
Does 1 kg of iron contain the same number of protons as 1kg of aluminium,hydrogen and wood
Can we define mass of matter with no of protons and neutrons it contains?

 

[tiny-tim]

Hi bolbol2054!

A neutron weighs almost exactly the same as a proton, and most elements have more neutrons than protons, so you would have to define mass of matter with the number of protons and neutrons (P + N) it contains.

If you did, it would be pretty accurate …

the errors (due to "binding energy") would be well under 1%: see the tables in http://en.wikipedia.org/wiki/Bindin..._experimentally_measured_atom_nuclide_masses" for some detailed figures.

 

[bolbol2054]

thank you sir

 

[tiny-tim]

don't call me sir!

i'm only a little goldfish! ​

 

[PJC01]

Mass is defined as the amount of matter an object contains. It is a measure of the quantity of material present in an object. The mass of an object is not dependent on the type of material it is made of, but rather the amount of material it contains. Therefore, 1 kg of iron, aluminium, hydrogen, or wood will all have the same mass, as long as they each weigh 1 kg.

However, the number of protons and neutrons an object contains can provide information about its mass. This is because protons and neutrons make up the majority of an object's mass. The number of protons and neutrons in an object can vary, but the total number of these particles will determine the overall mass of the object.

For example, 1 kg of iron will have a different number of protons and neutrons than 1 kg of aluminium, hydrogen, or wood. This is because the atomic mass of each element is different, which is determined by the number of protons and neutrons in its nucleus.

In conclusion, while the mass of an object is not solely determined by the number of protons and neutrons it contains, the total number of these particles does play a role in defining the mass of an object.