The five main points of John Dalton's atomic theory are as followed: · Elements are made of tiny particles called atoms. · All atoms of a given element are identical. · The atoms of a given element are different from those of any other element. · Atoms of one element can combine with atoms of other elements to form compounds. · A given compound always has the same relative numbers of types of atoms. · Atoms cannot be created, divided into smaller particles, nor destroyed in the chemical process. A chemical reaction simply changes the way atoms are grouped together.
they are not identical. Dalton's model was wrong.
Thomson's experiment suggested the presence of negatively charged electrons in atoms, which led to the modification of Dalton's atomic model. Dalton's model proposed that atoms were indivisible and indestructible spheres, but Thomson's discovery showed that atoms were not indivisible and contained subatomic particles, leading to the development of the plum pudding model.
Matter is made up of atoms, atoms cannot be divided into smaller pieces, all the atoms of an element are exactly alike, and different elements are made of different kinds of atoms. The nucleus, electrons in the electron cloud is the today's model and the past model is matter divided into smaller pieces.
Dalton's atomic model was often referred to as the "Billiard Ball Model" because he envisioned atoms as solid, indivisible spheres similar to billiard balls.
Atoms are imagined as tiny balls in the billiard ball model or Dalton's atomic theory. This model suggests that atoms are indivisible, solid particles with no internal structure.
Thomson's experiment showed that atoms contain subatomic particles, specifically electrons. This discovery led to the modification of Dalton's atomic model, which previously considered atoms to be indivisible and uniform. Thomson's model proposed the existence of electrons within the atom.
Thompson's model proposed that atoms were made up of positive and negative charges distributed throughout a positively charged sphere, similar to a raisin pudding. In contrast, Dalton's model suggested that atoms were indivisible and uniform spheres with no internal structure. Thompson's model introduced the idea of subatomic particles, while Dalton's model viewed atoms as simple building blocks of matter.
Dalton's model of the atom proposed that atoms are indivisible and indestructible particles. However, this was disproved with the discovery of subatomic particles, such as electrons, protons, and neutrons, which showed that atoms can be divided into smaller constituents. Additionally, the existence of isotopes demonstrated that atoms of the same element can have different masses due to varying numbers of neutrons, contradicting Dalton's assertion that all atoms of a given element are identical.
Dalton's model is commonly referred to as the "Dalton's Atomic Theory." Proposed by John Dalton in the early 19th century, it posits that all matter is composed of indivisible atoms, which are the smallest units of an element. The theory also states that atoms of the same element are identical in mass and properties, while those of different elements differ. This foundational model laid the groundwork for modern chemistry and our understanding of atomic structure.
Dalton never acknowledged the fact that the atomic structure consisted of protons nor electrons. Dalton's theory suggested:unlike Thomson who came up with the theory of the 'Plum Pudding Model', which consisted of a positive proton with electrons 'scattered' through it, like "...currants in a Christmas pudding..."hope this was somewhat helpful :)Matter is made up of indivisible atoms.All atoms of an element are identical.Atoms are neither created nor destroyed.Atoms of different elements have different weights and chemical properties.Atoms of different elements combine in simple whole numbers to form compounds.
an atomic model explained several observations.
dalton created a solid sphere model. He belived that the atom was one single sphere, and that diffrent elements were made of diffrent types of atoms.