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Not all of Daltons rules were completely true as scientists later learned Matter is made of atoms and different elements are made of different atoms But not all atoms of a particular element are?
Dalton's atomic theory proposed that all atoms of a particular element are identical, which we now know is not entirely true. Isotopes are atoms of the same element with different numbers of neutrons, leading to variations in atomic mass. This discovery challenged Dalton's rule of identical atoms for a given element.
What major contribution did john Dalton made to the atomic theory?
Dalton's Atomic Theory 1) All matter is made of atoms. Atoms are indivisible and indestructible. 2) All atoms of a given element are identical in mass and properties 3) Compounds are formed by a combination of two or more different kinds of atoms. 4) A chemical reaction is a rearrangement of atoms.
Which best describes john Dalton's observations of elements in any given compound?
Dalton discovered that the atoms that combine to form compounds are distinguished from one another by their atomic weights. He also learned that all atoms of a given element are identical.
In a sample of pure copper all atoms have the same what?
All atoms have atomic numbers which are the same and the atoms have the same number of electrons.
Substance in which all atoms are alike?
A substance in which all atoms are identical is called an element.
Did daltons atomic theory include the idea that all atoms of all elements are the same size?
No, Dalton's atomic theory did not include the idea that all atoms of all elements are the same size. Instead, he proposed that atoms of different elements have different sizes and weights.
Who found that all atoms of the same element are the same and all atoms of different elements are different?
It was proposed by John Dalton in his atomic theory.
John Dalton's atomic theory stated that atoms of the same?
According to John Dalton, all the atoms of a single element will have the same mass. This is the basis for the modern atomic theory.
Who said that all atoms of an element are identical in size mass and other properties?
John Dalton
John Dalton concluded that all the atoms of a single what have the same mass?
He concluded that all atoms of an element have same mass and identical chemical and physical properties.
Who proposed that all atoms cannot be divided or destroyed and that atoms of the same element are exactly the same?
Dalton. Dalton's atomic theory stated that atoms are indivisible and indestructible and unchangeable.
Daltons atomic therory?
In the 1800s John Dalton did some experiments and these are some of his magnificent work: * all elements are composed of atoms. atoms can not be divided or destroyed * atoms of the same element are alike * .atoms of different elements are not alike * the atoms of two or more elements can join together to form compounds
How does the discovery of isotopes contradict Dalton's theory?
It was then changed to "All atoms of the same element contain the same number of protons and electrons, but atoms of a given element may have different numbers of neutrons." after James Chadwick discovered that the nuclei of most atoms contain neutrons as well as protons.
What were John Dalton's hypotheses about atoms?
1. Atoms are impenetrable and aren't destructible. All material is made up of very, very small atoms. 2. All atoms of an element have the same mass and the same properties. 3. Mixtures are made by a fusion of 2+ unlike classifications of atoms. 4. A chemical reaction is a displacement of atoms.
Who proposed the atom theory that all matter is composed of atoms and that all atoms of an element are alike?
John Dalton proposed the atom theory in the early 19th century. He suggested that all matter is made up of tiny, indivisible particles called atoms, and that all atoms of a specific element are identical in size, mass, and properties.
What did Dalton visualize Adams to be like?
Dalton visualizes "atoms" as being indestructible and that all matter were made of atoms
How was Dalton's atomic theory similar to Democritus atomic theory?
Both Dalton and Democritus proposed that matter is made up of indivisible particles called atoms that are different in size and shape. They also believed that atoms are in constant motion and can combine to form different substances.
