What is "atoms"

Usage examples of "atoms".

Albert Einstein settled the question, showing that observations of a phenomenon known as the Brownian movement provided proof that atoms were real.

Furthermore, the idea that different kinds of corpuscles, or atoms, could combine with one another was the first step toward understanding the nature of chemical reactions.

Recall that he believed that the atoms, or corpuscles, of which all substances were composed were made of the same kind of primal matter.

He revolutionized chemistry by emphasizing that atoms have relative weights and that these relative weights can be measured.

The number of atoms in a molecule, Dalton said, was always a small whole number.

For example, if nitrogen and oxygen combined to form the oxide NO, and the nitrogen and oxygen were weighed, then one could determine the relative weights of the nitrogen and oxygen atoms by weighing the quantities of nitrogen and oxygen that combined with one another.

It might be impossible to determine how much individual atoms weighed, but one could establish, for example, that the atoms of one element weigh three-quarters or seven-eighths as much as those of another.

He assumed also that all the atoms of any given elements are exactly alike but different from the atoms of other elements.

Finally, chemical combination happens when one or more atoms of one element are joined to one or more atoms of another.

For example, in some cases two atoms of one element might link up with three atoms of another.

He also stated that, unless there was some evidence to the contrary, one should assume that atoms combine in the simplest possible manner.

At this time, chemical notion had not yet been standardized, and Dalton used pictorial symbols of different kinds to represent the atoms of different elements.

HO caused him to calculate incorrect figures for the weight of hydrogen atoms relative to other elements.

On the contrary, his idea was significant because it was a theory that explained how chemical compounds are formed and because the idea of atoms with different relative weights made it possible to turn chemistry into a quantitative science.

Dalton was right to conclude that atoms always combine with one another in small whole-number ratios.