Chemistry History and Atoms

Protons are bound together by

The ancient belief in continuous matter was supported by________.

The word atom originally meant_________.

The man who discovered the Law of Definite Proportions is

The ____ number for an element is the number of nucleons (protons and neutrons) in the nucleus.

The ______ number for an element is the number of protons in the nucleus.

Avogadro was well liked and his theory of the mole was accepted while he was alive.

Which is of the following is NOT an isotope of hydrogen?

_____ number is the number of particles in one mole.

One _____ is 6.022 x 10²³ of anything.

An atom of potassium has 19 protons and 20 neutrons. Its mass number is 39.

Isotopes differ from other atoms of an element because of a different number of _________.

Compared with a mole of lead atoms, a mole of iron atoms_________________

_________ was a Greek philospher who coined the word "atom",

Table salt, NaCl, is composed of two elements in a 1:1 ratio supports the Law of________.

Dalton's atomic theory in the Law of _____ said atoms could not be created or destroyed.