Thomson's experiments were significant in that they questioned
A. whether matter is made up of atoms.
B. whether the atom has a positive or negative charge.
C. whether atoms will form compounds with other atoms.
D. whether the atom could be broken up into smaller units.

J.J Thomson was an English physicist who had given the plum pudding model of the atom in 1904. In which he described about the existence of two subatomic particles which are protons (positive particles) and electrons (negative particles).

In his model atom was considered to be a pudding or bed of positive charge in which negative particles are present same as as plum on the pudding.

Thomson's experiments were significant in that they questioned A. whether matter is made up of atoms. B. whether the atom has a positive or negative charge. C. whether atoms will form compounds with other atoms. D. whether the atom could be broken up into smaller units.

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Thomson's experiments were significant in that they questioned
A. whether matter is made up of atoms.
B. whether the atom has a positive or negative charge.
C. whether atoms will form compounds with other atoms.
D. whether the atom could be broken up into smaller units.