Question
Who proposed that matter was composed of four ‘elements’—earth, air, wind, and fire—in varying quantities.
- Empedocles
- Leucippus
- Democritus
- Aristotle
Hint:
A Greek pre-socratic philosopher proposed this theory.
The correct answer is: Empedocles
- Empedocles proposed that matter was composed of four ‘elements’ earth, air, wind, and fire in varying quantities.
- In earlier times, there were many theories that speculated about the nature of the matter. Later, many other theories came forward to disprove the previous ones.
- Empedocles was the Greek philosopher who came forward with the idea that the universe is composed of four different elements like earth, water, air, and fire. These elements are present in varying compositions.
The different elements, fire, water, earth, and air are present in this environment but in different ratios and compositions.
Related Questions to study
How many numbers of protons and electrons are there in a magnesium ion?
The number of protons is equal to the number of electrons until it becomes an ion.
How many numbers of protons and electrons are there in a magnesium ion?
The number of protons is equal to the number of electrons until it becomes an ion.
“Law of constant proportion” was proposed by
The Law of constant proportion is also known as the law of definite proportion or Proust's law.
“Law of constant proportion” was proposed by
The Law of constant proportion is also known as the law of definite proportion or Proust's law.
Which branch of chemistry deals with the separation, quantitative analysis, qualitative analysis and identification of substances?
The traditional methods include flame tests, the Kastle Meyer test, etc. whereas modern methods include spectrophotometry, calorimetry, etc.
Which branch of chemistry deals with the separation, quantitative analysis, qualitative analysis and identification of substances?
The traditional methods include flame tests, the Kastle Meyer test, etc. whereas modern methods include spectrophotometry, calorimetry, etc.
Which one of the following is the limitation of Dalton's atomic theory?
Dalton's atomic theory doesn't even take into account the presence of isotopes and isobars.
Which one of the following is the limitation of Dalton's atomic theory?
Dalton's atomic theory doesn't even take into account the presence of isotopes and isobars.
If all the reactants in a reaction are completely used, which of the following statements describe the relationship between the reactants and the products?
Law of conservation of mass is valid under isolated conditions.
If all the reactants in a reaction are completely used, which of the following statements describe the relationship between the reactants and the products?
Law of conservation of mass is valid under isolated conditions.
On combustion of propane, reaction:
If 200gms of propane is burned, then how many grams of water is produced?
Number of moles are calculated as mass of substance divided by mass of one mole.
On combustion of propane, reaction:
If 200gms of propane is burned, then how many grams of water is produced?
Number of moles are calculated as mass of substance divided by mass of one mole.
If the iron reacts with hydrochloric acid to form ferrous chloride and hydrogen, then what will be the atomic mass of the product?
When hot iron reacts with chlorine gas, the product will be ferric chloride, (FeCl3 )instead of ferrous chloride.If the iron reacts with hydrochloric acid to form ferrous chloride and hydrogen, then what will be the atomic mass of the product?
If the reactant carbon is combined with reactant oxygen to form the product carbon dioxide, then what will be the atomic mass of the product?
Molecular mass is measured as an atomic mass unit or Dalton.
If the reactant carbon is combined with reactant oxygen to form the product carbon dioxide, then what will be the atomic mass of the product?
Molecular mass is measured as an atomic mass unit or Dalton.
In a chemical reaction, 200 grams of reactant A is combined with 50g of reactant B. Both A and B react to completion. How much will the total product weigh?
Since there is no quantity left in the products side, the calculation of total mass of product become easier.
In a chemical reaction, 200 grams of reactant A is combined with 50g of reactant B. Both A and B react to completion. How much will the total product weigh?
Since there is no quantity left in the products side, the calculation of total mass of product become easier.
What is 1 Dalton?
1 Dalton is also known as the unified atomic mass unit.
What is 1 Dalton?
1 Dalton is also known as the unified atomic mass unit.
Who believed all substances like air, water, earth, and fire are small amounts of matter?
Aristotle did not believe in Dalton's atomic theory.
Who believed all substances like air, water, earth, and fire are small amounts of matter?
Aristotle did not believe in Dalton's atomic theory.
Who has called the smaller particle or the piece “Atomos”?
There is no other element in this universe that is smaller than an atom.
Who has called the smaller particle or the piece “Atomos”?
There is no other element in this universe that is smaller than an atom.
According to law of conservation of mass, the mass of the reactant side must always be ________ to the product side.
The law of conservation of mass was proposed by Antoine Lavoisier.
According to law of conservation of mass, the mass of the reactant side must always be ________ to the product side.
The law of conservation of mass was proposed by Antoine Lavoisier.
All atoms of the same element are identical in __________ and ______.
The elements with the same atomic number and different atomic mass are known as isotopes.
All atoms of the same element are identical in __________ and ______.
The elements with the same atomic number and different atomic mass are known as isotopes.
Which of the following was not explained by Dalton’s atomic theory?
Dalton's atomic theory has many limitations including the inability to explain the presence of isotopes and allotropes.
Which of the following was not explained by Dalton’s atomic theory?
Dalton's atomic theory has many limitations including the inability to explain the presence of isotopes and allotropes.
