The statement that atoms of the same element are exactly alike is attributed to John Dalton, who proposed the atomic theory in the early 19th century. Dalton's theory posited that all atoms of a given element are identical in mass and properties, which laid the foundation for modern chemistry. However, it is important to note that later discoveries, such as isotopes, revealed that atoms of the same element can differ in mass due to variations in the number of neutrons.
Dalton. Dalton's atomic theory stated that atoms are indivisible and indestructible and unchangeable.
Someone Rutherford.
John Dalton
The number of neutrons in the atoms of a specific element can vary, leading to the formation of isotopes. While all atoms of a given element have the same number of protons (defining the element), the neutron count can differ, affecting the atomic mass and stability of the isotopes. For example, carbon typically has six neutrons, but carbon-14, an isotope of carbon, has eight neutrons. These variations can influence the element's properties and behavior in chemical reactions.
John Dalton, an English scientist, proposed the theory that atoms are the smallest particle of an element that retains its chemical properties. His work on atomic theory laid the foundation for modern chemistry.
An atom is the smallest unit of any element.
Dalton. Dalton's atomic theory stated that atoms are indivisible and indestructible and unchangeable.
An atom is the smallest piece of an element. Said another way, and element is made up one and only one kind of atoms.
Someone Rutherford.
John Dalton
If the atoms of the same element (not only carbon!) occur in different arrangements, they are said to be different allotropes.
The atom is said to be ionized. (It can also be said to be oxidised.)
Atoms with nuclei that are not stable and lose parts through decay are said to be radioactive. This process results in the transformation of the atom into another element, along with the release of energy in the form of radiation.
1 mol of Ag and 1 mol of Au can be said to contain the same amount of atoms of each element.
Neutral atoms of the same element can differ in the number of neutrons, which results in different isotopes of the same element. Isotopes have the same number of protons and electrons, but different numbers of neutrons.
John Dalton, an English scientist, proposed the theory that atoms are the smallest particle of an element that retains its chemical properties. His work on atomic theory laid the foundation for modern chemistry.
No. Atoms are what make up elements, so they don't count.