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No b/c Thomson discovered that atoms can be cut. He found this out while studying rays traveling between charged metal plates in a vacuum tube. He discovered that the rays were consisted of negatively charged particles. He had just discovered electrons. He discovered all of this on a trip from America. Since electrons are so small, he believed that they could only be from inside of the atom. Since Thomson's discovery of the electron, John Dalton's theory that atoms are indivisible had to be changed.
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Did daltons atomic theory include the idea that all atoms of all elements are the same size?
no.
Which part of daltons atomic theory are known to be incorrect?
The idea that atoms are indivisible and indestructible, and the idea that all atoms of the same element have the same mass.
What discovery contradict components of Daltons atomic theory?
These ideas are:· "All atoms of a given element are identical" : discovery of isotopes.· "A given compound always has the same relative numbers of types of atoms" : discovery of nonstoichiometric compounds.
What are the three main points to John Daltons atomic theory?
1) elements are composed of atoms 2) atoms of same elements = 3) atoms of different elements not = 4) atoms fomr compounds in definite ratios H2O
Did the existence of isotopes affect the validity of the atomic theory?
Dalton's theory said that "atoms of the same element are the same as each other in terms of mass, color, and size." We know that this cannot be true because isotopes of the same element, oxygen for example O-16 and O-17, have different mass numbers (atomic mass). Dalton's theory said that "atoms of the same element are the same as each other in terms of mass, color, and size." We know that this cannot be true because isotopes of the same element, oxygen for example O-16 and O-17, have different mass numbers (atomic mass).
Did daltons atomic theory include the idea that all atoms of all elements are the same size?
no.
Which part of daltons atomic theory are known to be incorrect?
The idea that atoms are indivisible and indestructible, and the idea that all atoms of the same element have the same mass.
What part of Daltons atomic theory was then proven to be incorrect?
Two principles not valid today:· All atoms of a given element are identical.· A given compound always has the same relative numbers of types of atoms.
What discovery contradict components of Daltons atomic theory?
These ideas are:· "All atoms of a given element are identical" : discovery of isotopes.· "A given compound always has the same relative numbers of types of atoms" : discovery of nonstoichiometric compounds.
What are the three main points to John Daltons atomic theory?
1) elements are composed of atoms 2) atoms of same elements = 3) atoms of different elements not = 4) atoms fomr compounds in definite ratios H2O
The atomic number increases but the atomic mass stays the same?
The atomic number increases but the atomic mass stays the same after the emission of a beta particle by a radioactive atom.
What subatomic particle is the same as the atomic number?
In a neutral atom, the number of protons (or the number of electrons) are the same as the atomic number.
How was Dalton's atomic theory similar to democritus's atomic theory?
They both thought the same theory but Dalton had evidence to prove it, unlike Democritus.
What was john daltons contribution to the atomic theory?
He said that atoms can not be divided; in one matter all the atoms are of same kind,same mass and same type. He also said that different matters have different kinds of atoms. He furthermore said that atoms from different matters meet together at a particular rate and make molecules.
Name the subatomic particles that the number of this particle is always the same as the atomic number?
The proton
In a neutral atom what particle has the same number as the atomic number?
protons apex mz.rena:-)
What does An alpha particle has the same mass and atomic number as?
Helium nucleus
