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John Dalton concluded that all the atoms of a single what have the same mass?
He concluded that all atoms of an element have same mass and identical chemical and physical properties.
All oxygen atoms have the same mass?
yes.
What are atoms with the same atomic number but different mass called?
Atoms with the same atomic number are all atoms of the same element. However, if the atoms have different molecular weights, they are isotopes of the same element.
What scientific instrument was used to discover that not all atoms of neon have the same mass?
The mass spectrometer was used to discover that not all atoms of neon have the same mass. This instrument separates and measures atoms based on their mass-to-charge ratio, allowing scientists to identify isotopes of elements like neon that have different masses.
The mass of any two atoms of the same element is always the same?
The masses of any two atoms of the same element are not always the same. Atomic mass (the mass you see on the periodic table) is just a weighted average of all of the weights of all of the different isotopes of an element.
Not all of Daltons rules were completely true as scientists later learned Matter is made of atoms and different elements are made of different atoms But not all atoms of a particular element are?
Dalton's atomic theory proposed that all atoms of a particular element are identical, which we now know is not entirely true. Isotopes are atoms of the same element with different numbers of neutrons, leading to variations in atomic mass. This discovery challenged Dalton's rule of identical atoms for a given element.
Why is there an average atomic mass?
There is an average atomic mass because all atoms of the same element do not have the same amount of neutrons (isotopes), therefore variations in atomic mass exist. The average atomic mass of an element is the estimated average of all the atoms of the same element, given the average of different isotopes in a scientific sample.
How does the discovery of isotopes contradict Dalton's theory?
It was then changed to "All atoms of the same element contain the same number of protons and electrons, but atoms of a given element may have different numbers of neutrons." after James Chadwick discovered that the nuclei of most atoms contain neutrons as well as protons.
Are all sample of elements are composed of atoms with same atomic mass?
No, different samples of an element can have varying atomic masses due to the presence of isotopes. Isotopes are atoms of the same element with different numbers of neutrons, leading to different atomic masses.
Do all protons have the same mass if they come out of helium?
All protons have the same mass regardless of where they come from. It should be noted, however, that most of the mass in atoms comes from the forces holding the atom together.
Which statment is true according to Dalton theory?
According to Dalton's atomic theory, one true statement is that all matter is composed of indivisible atoms, which are the fundamental building blocks of matter. Additionally, Dalton proposed that atoms of the same element are identical in mass and properties, while atoms of different elements differ in mass and properties. This theory laid the groundwork for modern chemistry by introducing the concept of atoms as the basic units of chemical reactions.
Did John Dalton conclude all atoms of a single element have the same mass?
Not necessarily, because most elements have isotopes, which have slightly different weights. However, atoms of a particular element always have the same number of protons, equal to the atomic number of the element.
