In chemistry, it has been stated that atoms are the basic building blocks of ordinary matter that contain protons, neutrons, electrons, and can join to form molecules. (Gagnon) Atoms are really tiny and are considered the source of nuclear energy in all kinds of matter. The atomic theory became a very important piece in chemistry because it explained the atomic structure and how it worked. Important scientists that helped contribute to this theory were people like John Dalton and J.J. Thompson which helped establish a foundation to the theory, as well as create experiments that helped provide evidence of their findings. John Dalton was an important scientist that established the atomic theory. His theory was as follows: 1.All matter is made of atoms. Atoms are invisible and indestructible. 2. All atoms of given elements are identical in mass and properties. 3. Compounds are formed by a combination of 2 or more different kinds of atoms. 4. A chemical reaction is a rearrangement of atoms. 5. Atoms cannot be created or destroyed. (Leon) Dalton brought up this information while using his gas experiments and it helped him determine the properties of atoms. Although Democritus had somewhat already had a theory on matter, Dalton explored and expanded the theory into what it is today. Dalton was inspired and borrowed the term “atomos” or “atoms” from Democritus to label his particles. (Leon) Dalton also created the first chart of atomic weights and introduced his belief that atoms
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John Dalton wrote the modern atomic theory, a fundamental component of that is, the mole ratios of elements in a compound will be small whole numbers.
The atomic theory is very well known across the science community. It took many scientist to get it to what it is today. Aristotle and Democritus are played major parts in forming the atomic theory. They came up with a bunch of theories and made big contributions to the start of the atomic theory.
In the year 400 B.C, the first atomic structure was made. It was thought that everything could be broken down into very small particles. These small particles are atoms, which it is what atomic structure is all about. Atomic structures are visual demonstrations used to help understand how an atom looks like on the interior in the inside and what it consists of. Over the years, atomic structures have greatly improved and are still doing so. However, the first atomic structure had a great impact on science and on other observations made about atoms.
Then in 1661, Irish chemist Robert Boyle supported the philosophers’ theory of how chemical elements are made up of the simplest matter, backing the theory of how matter makes up all life and is the smallest living thing (Doc. 1). But a bombshell happened in 1803 when John Dalton backed up all three theories by discovering that atoms make up all matter, and chemical compounds are made of atoms (OI).
John Dalton was a British chemist born in 1766 in England to a Quaker family. His family was poor and he was homeschooled until at age 15. He and his brother ran a school. He had the biggest effect on the atom. He was the first to bring back the idea of an atom and prove it. One reason Dalton’s discovery is important is without it
Around 2,500 years ago, Democritus and his partner Leucippus were the first ones to develop the atomic theory in written history. Their theory proposed that every kind of matter was made up of tiny particles, which were named atomos, which means that it is indivisible. This meant that Democritus and Leucippus thought there were little particles of everything, but, the next breakthrough in atomic theory wasn’t made until the early 1800s with a french chemist by the name of Antoine Lavoisier, he was the one who came up with the idea of the law of the conservation of mass, which states that matter stays the same even when it changes shape or form. Then, James Dalton said that all matter was made up of atoms, which were indivisible, and unbreakable.
The second main contributor toward the atomic structure was John Dalton. John Dalton was the one who brought the atomic theory talk back into play after 2000 years from Democritus. Dalton become fond of the atomic structure following his love from meteorology. He claimed that the forces of repulsion that caused pressure only were between the same atoms and the atoms inside a mixture had different weights and complexity. He then decided to calculate the atomic weights by determining the percentages of each composition in a compound. This allowed him to be able to
Democritus made the atomic theory widely known, which stated that the universe is composed of two elements: the atoms and the void in which these atoms exist and move. (More, 1646)
Around 1803 John Dalton, an English chemist developed the first useful atomic theory of matter. Amedeo Avogadro, the Italian chemist in 1811 published an article drawing the distinction between the atom and the molecule, which now is known as “Avogadro’s
Over the course of the last 5000 years, mankind’s knowledge has been constantly advancing. Chemistry, a branch of science, has experienced a tremendous leap and expansions since ancient Greek civilization. One of the major breakthroughs in the advancement in Chemistry was the creation of the Atomic theory, which laid a foundation for the modern-day Chemistry and future of science. The Atomic theory introduced the idea of atoms, which are defined as the discrete units of matter. There are five key scientists that significantly contributed to the Atomic model over a span of thousands of years. They are: Democritus, John Dalton, J.J. Thompson, Ernest Rutherford, and Niels Bohr.
Each different scientist made an impact in some way to the origins of an atom. Lucretius’s work, De Rerum Natura, was the basis for many future scientists. Robert Boyle was a very religious man and people believed that was the reason for him not marrying. Boyle constructed the idea that the air was made up of different particles with each having different functions. Huygens first thought of the idea that waves of light moved in a spherical shape. His wave theory is still used today along with Maxwell’s electromagnetic theory. Isaac Newton is highly popular for his theory of gravity. Bernoulli began with the idea of the kinetic theory of gases in his work, Hydrodynamics. Newton gave the image to a lot of scientists after him of what an
The Discovery of the Atom first came from the Greeks which made a theory “The idea that all matter is made up of tiny, indivisible particles, or atoms, is believed to have originated with the Greek philosopher Leucippus of Miletus and his student Democritus of Abdera in the 5th century B.C. (The word atom comes from the Greek word atomos, which means “indivisible.”)” (InfoPlease Atomic theory)
John Dalton was an English chemist, physicist and meteorologists, his work today helps us better understand the model of the atom and the way that the atom functions. Dalton’s work provided the evidence that elements contain atoms. Thomson tinkered with experiments and investigation and after numerous experiments using a Cathode Ray Tube helped him to discover the electron. John Dalton’s beliefs, however, were that the atoms were highly indivisible particles, furthermore Thomson’s Discovery of the electron proved the very existence of subatomic particles (i.e. an electron). This discovery of the atom was made in 1897 and 7 years later in 1904 the model of the atom was first proposed. When Thomson first developed a concept of his research