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Was not among Democritus and ideas Matter consists of tiny particles called atoms. Atoms retain their identity in a chemical reaction. Atoms are indestructible. Atoms are indivisible.?
Wiki User
∙ 6y ago
All is true; theory of Leukippus and Democritus was 2 500 yers ago only a theretical (but correct) supposition.
Wiki User
∙ 6y ago
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What is the contribution made to chemistry by Democritus and Dalton?
Democritus theorized that all matter was made up of indivisible, microscopic substances which were held together in various combinations that formed the objects that were perceived by our eyes. Because the word in Greek for indivisible is 'atomos', this theory gave rise to the atom. Democritus proposed this theory about 420 B.C.
What is Dalton's atomic theory?
1. All matter is made of atoms. 2. All atoms of a given element are identical in mass and properties. 3. Atoms are indivisible and indestructible. 4. A chemical reaction is a rearrangement of atoms. 5. Compounds are formed by a combination of two or more different kinds of atoms.
What are the 6 postulate of john Dalton?
1)all matter are made of very tiny particles called atoms2)atoms are indivisible particles, which cannot be created or destroyed in a chemical reacition3)atoms of a given element are indentical in mass and chemical properties4)atoms of different elements have different masses and chemical properties5)atoms combine in ratio of small whole numbers to form compounds6)the relative number and kinds of atoms are constant in a given compound
What is the characteristics and nature of atoms?
Atoms are indestructible by chemical methods; a principal characteristic of an atom is the number of protons.
What particles play roles in creating chemical bonds?
Electrons are the particles involved in chemical bonds.
The law of conservation of mass follows from the concept that?
are rearranged during a chemical reaction.
The fundamental particle of a chemical element according to Daltons theory is?
The atom. Considered by Dalton to be indivisible and indestructible.
Who was the first person to say atoms are indivisible?
In the antiquity Leukipus and Democritus, on philosophic bases.This scientist was John Dalton in the 19th century, on chemical bases.
Who described atoms that they are small hard particles?
John Dalton. N.B.: John Dalton [born: September 6, 1776; died: July 27, 1844, at age 67] was an English chemist and physicist who claimed matter was made up of tiny particles and that these particles were identical for any given kind of matter. Moreover, he claimed these particles were indivisible and could neither be created nor destroyed in any chemical process, only be altered in the manner they were grouped.
Who stated the atom was a single small particle that was indivisible?
A Greek philosopher by the name of Democritus came up with the general idea and the name of atoms (atomos literally means "no cut" -- in other words, indivisible -- in Greek). However, he didn't really have any experimental evidence for this, he just thought it was the way things should work. It took almost 2000 years before scientists demonstrated that this concept was actually pretty accurate. Actually, this concept goes back to the Greeks. Dalton also believed it, but was wasn't the first:From ChemTeam: Atomic Structure by John Dalton (see link to the left):"Elements are made up of minute, discrete, indivisible, and indestructible particles called atoms. These atoms maintain their identity through all physical and chemical changes. This, of course, is not a new idea to Dalton. This basic idea goes back to the Greeks. However, please keep in mind that atoms, as such, were not part of the chemical mainstream in the early 1800's. Dalton's idea of an element is what we believe today - an element is a chemical substance that cannot be decomposed further by chemical means (i.e. heat, electricity, reacting with another chemical). This definition traces to Lavoisier. Daltonian atoms are usually taught as being similar to featureless billiard balls. In truth, Dalton never ruled out the possibility of subatomic structure. He just knew that the state of the art in the early 1800's did not allow the physical structure of an atom to be probed."
What is the contribution made to chemistry by Democritus and Dalton?
Democritus theorized that all matter was made up of indivisible, microscopic substances which were held together in various combinations that formed the objects that were perceived by our eyes. Because the word in Greek for indivisible is 'atomos', this theory gave rise to the atom. Democritus proposed this theory about 420 B.C.
What chemical structure cannot be broken down?
This the atom; it is indestructible by chemical methods.
How does Dalton atomic theory explain the law of conservation of mass?
Dalton doesn't explain the law of conservation of mass.
Definitions about atoms?
An atom is the smallest chemical entity indivisible in chemical processes.
All substances are made from these?
Atoms! All matter is composed of atoms. Whether it's a pure sample of an element, a compound, or a mixture; solid, liquid, or gas, it all comes down to atoms. The word atom was coined by a Greek thinker named Democritus, who was the first to theorize that all matter was made up of some kind of indivisible particle, which he called "atomos," meaning indivisible. Thanks, Democritus!
What are the 5 postulates of the particle theory of matter?
The postulates of John Dalton: 1. All matter is made up of atoms. These are the ultimate particles, and are indivisible and indestructible. 2. All atoms of a given element are identical, both in weight and in chemical properties. 3. Atoms of different elements have different weights and different chemical properties. 4. Atoms of different elements can combine in simple whole numbers to form compounds. 5. When a compound is decomposed, the recovered atoms are unchanged and can form the same or new compounds.
What are the principle of Dalton's atomic theory?
1. All matters is composed of indivisible atoms. 2. All atoms of a given element are identical in mass and all other properties. 3. Different elements have different atoms. 4. Atoms are indestructible and retain their identities in chemical reactions. 5. Chemical reactions involved the combination, separation, and rearrangement of atoms.
