Chemistry honors topic 2 lesson 1-4

Question 1

who’s is Dalton and what model did he create

Answer 1

created the Marble atom model and what is it, created a theory all matter is composed of tiny indivisible atoms , atoms are hard solid spheres with no internal structure. Each element is composed of extremely small particles called atoms.

Question 2

Who is Thompson and what model did he create

Answer 2

Used cathode ray tube to discover negatively charged particles called electrons, believed that the atom was a uniform sphere of positive matter which negative electrons were embedded