Dalton's Atomic Theory question?

Question

He said in his theory that matter was composed of small particles that could not be changed, created, or destroyed. However, we can split atoms and we can add or remove electrons, can't we?

Answer 1

Dalton's Atomic Theory

1) All matter is made of atoms. Atoms are indivisible and indestructible.
Not True

2) All atoms of a given element are identical in mass and properties
Not true (isotopes)

3) Compounds are formed by a combination of two or more different kinds of atoms.
(Compounds and Chemicals are separately defined now)

4) A chemical reaction is a rearrangement of atoms.
(Kinda True (Chyrality))


Modern atomic theory is, of course, a little more involved than Dalton's theory but the essence of Dalton's theory remains valid. Today we know that atoms can be destroyed via nuclear reactions but not by chemical reactions. Also, there are different kinds of atoms (differing by their masses) within an element that are known as "isotopes", but isotopes of an element have the same chemical properties.

Many heretofore unexplained chemical phenomena were quickly explained by Dalton with his theory. Dalton's theory quickly became the theoretical foundation in chemistry.

Answer 2

first let me tell you about Dalton
In 1808, the English chemist, John Dalton organized a logical hypothesis about the existence of atoms. He studied certain experimental observation made by Lavoisier and othe scientists. From his studies he believed that each element is composed of atoms. The atoms unite in a simple whole number ratio to form compounds.now Dalton's atomic theory is the following

1. Matter is made up of indivisible practices called atoms.

2. Atoms can not be created, destroyed or transferred in to atoms of other elements.

3. Atoms of the same element are the same especially in mass.

4. Atoms of different elements are different.

5. Atoms unite in a definite ratio to form compounds.

So his ideas was just like this it doesn't mean that we cant split atoms we can split atoms and we can add or remove electron in the modern atomic theory.
I hope this helps

Answer 3

Dalton's theory was a good first approximation; the details you mention came later. Under the conditions prevailing in chemical reactions, atoms don't split, and the loss or addition of an electron doesn't change the fundamental properties of an atom, which are defined by its nucleus.

Answer 4

His theory was just a step along the way to a much more accurate theory. Next in line came Thompson's plum pudding model, followed by Rutherford's planetary orbit model, Bohr's great fix of Rutherford's model, and finally quantum mechanics.

Splitting the atom is in the department of nuclear physics. Adding and removing electrons is chemistry. Both of which have quantum mechanics as their foundation.

Answer 5

Yes you can still subdivide atoms into smaller components. Dalton's theory was revised/modified due to some loopholes. Read the contributions of Rutherford, Thomsons, et.al leading to the development of wave model of atoms...

Answer 6

Dalton's concept had 4 important postulate: a million. All count is made up of tiny indivisible debris suggested as atoms that isn't be able to be created nor destroyed. 2. Atoms of one factor won't be able to be converted into atoms of yet another factor. In chemical reactions, atoms merely recombine in diverse places to style a sparkling compound. 3. Atoms of one factor are comparable in mass and residences and are diverse from atoms of the different factor. 4. Compounds consequence from the chemical mix of a particular ratio of atoms of diverse factors. right this moment all of us understand that for the period of a million. atoms are divisible (electrons, protons, neutrons, or maybe difficulty-loose debris). yet they are the smallest unit to maintain the residences of the factor. Atoms won't be able to be created nor destroyed that's the regulation of Conservation of Mass. 2. isn't thoroughly real using fact nuclear reactions consequence in diverse atoms. yet we settle for his postulate relating to the rearranging of atoms in chemical reactions. 3. isn't real using fact of isotopes of factors yet we do settle for that the dimensions and residences of atoms from one factor variety from atoms of alternative factors. 4. is real ninety 9% of the time. some compounds could have very easy modifications in atom ratios. wish this facilitates and is not any longer too complicated.

Answer 7

yes. dalton was basically right for the conditions he was working with. atomic nuclei don't split under normal 'chemical' conditions, there is not enough energy involved to do this (see your other question about radioactivity).