There is a callout which shows that copper is made up of many sphere-shaped atoms.
![according to dalton according to dalton](https://i.pinimg.com/736x/fd/03/dc/fd03dcc12e9950848a48723312728572.jpg)
The first part of his theory states that all matter is made of atoms, which are indivisible. Dalton based his theory on the law of conservation of mass and the law of constant composition. The left stoppered bottle contains copper and oxygen. Dalton's atomic theory was the first complete attempt to describe all matter in terms of atoms and their properties. 4) A chemical reaction is a rearrangement of atoms. 3) Compounds are formed by a combination of two or more different kinds of atoms. 2) All atoms of a given element are identical in mass and properties. (credit copper: modification of work by Copper ). Dalton’s atomic theory consists of four postulates that are as follows:1) Matter is made up of atoms that are indivisible and indestructible. The following are the postulates of his theory: Every matter is made up of atoms.
![according to dalton according to dalton](https://img.haikudeck.com/mg/E296C23A-E958-4DDC-AD73-60D27077501C.jpg)
Daltons atomic theory also stated that all compounds were composed of combinations of these atoms in defined. According to the postulates proposed by Dalton, the atomic structure comprised atoms, the smallest particle responsible for the chemical reactions to occur. Daltons Atomic Theory was formulated by John Dalton in 1808, and it remains a fundamental tenet of chemistry to this day.
![according to dalton according to dalton](https://s3.amazonaws.com/s3.timetoast.com/public/uploads/photos/2288904/finishedlg_sphere_1_.jpg)
While all atoms of an element were identical, different elements had atoms of differing size and mass. \): When the elements copper (a shiny, red-brown solid, shown here as brown spheres) and oxygen (a clear and colorless gas, shown here as red spheres) react, their atoms rearrange to form a compound containing copper and oxygen (a powdery, black solid). Daltons atomic theory proposed that all matter was composed of atoms, indivisible and indestructible building blocks. According to Daltons atomic theory, all matter is made up of very tiny particles called atoms. According to Dalton Atomic Theory, atoms of an element are identical in mass, size and many other chemical or physical properties.