GK
CHEMISTRY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
atoms are made of protons, neutrons, and electrons
|
|
|
the nucleus is the center of the atom
|
|
|
atoms can join to form molecules
|
|
|
atoms are constantly in morion
|
Detailed explanation-1: -Dalton based his theory on the law of conservation of mass and the law of constant composition. The first part of his theory states that all matter is made of atoms, which are indivisible. The second part of the theory says all atoms of a given element are identical in mass and properties.
Detailed explanation-2: -Dalton’s atomic theory stated that every element was made of atoms that could not be subdivided, atoms of the same element are alike, and : Atoms of different elements could form to join compounds.
Detailed explanation-3: -Both Democritus and Dalton suggested that matter is made up of atoms. Dalton’s atomic theory stated that atoms separate, combine, or rearrange in chemical reactions. Dalton’s atomic theory stated that matter is mostly empty space. Dalton was correct in thinking that atoms could not be divided into smaller particles.
Detailed explanation-4: -Drawbacks of Dalton’s Atomic Theory The indivisibility of an atom was proved wrong: an atom can be further subdivided into protons, neutrons and electrons. However an atom is the smallest particle that takes part in chemical reactions. According to Dalton, the atoms of same element are similar in all respects.
Detailed explanation-5: -Dalton’s atomic theory couldn’t explain gaseous volumes, because as per his view, different elements have different mass but this isn’t true. This is explained by Gay lussac’s law. This is one of the major limitations of Dalton’s atomic theory.