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What is the difference of John Dalton's atomic theory to today's atomic theory?
Although Dalton's theory remains valid in modern atomic theory, there are some differences. Dalton's theory stated that atoms were indivisible and indestructible, but discoveries in modern atomic theory showed that there are subatomic particles that are smaller than the atom. Similarly, through nuclear reactions, an element's atoms can be transformed into atoms of another. Modern atomic theory includes isotopes while Dalton's theory does not have this phenomenon.
What was john Dalton's major constraint when he suggested his Atomic Theory?
John Dalton's major constraint when he suggested his Atomic Theory was the lack of experimental evidence at that time to directly support his ideas. He relied mainly on his observations and reasoning, as the technology to directly visualize atoms was not available during his time.
Bohr improved upon Dalton's atomic theory?
Yes, Bohr improved upon Dalton's atomic theory by introducing the concept of quantized energy levels for electrons in an atom. He proposed that electrons orbit the nucleus in specific energy levels or shells, which can only hold a specific number of electrons. This model provided a better explanation for the stability and spectral lines of atoms.
Did postulate 4 of Daltons atomic theory holds true now?
No, postulate 4 of Dalton's atomic theory, which stated that atoms of the same element are identical, is not entirely true. We now know that isotopes exist, which are atoms of the same element with different numbers of neutrons. This means that atoms of the same element can have slightly different masses.
Are caves a type of islands ecosystem according to the theory of island biogeography?
No, caves are not considered a type of island ecosystem according to the theory of island biogeography. The theory focuses on the principles that govern the biodiversity and species composition on actual islands, rather than on enclosed, subterranean cave environments.
Is Dalton's atomic theory true?
not everything.. some are true some are not
Dalton's atomic theory was based on careful measurements and extensive research?
True
Dalton's atomic theory was based on careful measurements and extensive research true or false?
True. Dalton's atomic theory, proposed in the early 19th century, was based on careful measurements of chemical reactions and extensive research into the properties of elements. His theory laid the groundwork for modern atomic theory and helped advance the understanding of the composition of matter.
Which two of the three statements that make up Dalton's atomic theory are no longer regarded as true as stated by Dalton's?
All the atoms in elements are not a like
Is the converse of a true conditional statment is always true?
yes it is
which statment is true of Y chromsomes?
Base
What is Validity Generalization?
a valid geneeralization is a not true statment
What is a statment that is true for any number or variable?
An identity.
Is this statment true or false stride piano style is an example of smooth jazz?
True.
What is one true statment about suicide bombers?
There is no detailed profile.
Is it true that John Dalton proposed that the nucleus was found in the center of an atom?
It is untrue. John Dalton proposed the theory that all matter is made up of individual particles called atoms, which cannot be divided.
Which of these is a true statment about unexploded sub-munitions?
they can detonate from the slightest movement
