Consider the following statements and decide which of the listed scientists was responsible for each. You will use each scientist's name only ones. Dalton Thomson Rutherford Bohr

a. Believed that atoms were small indivisible particles
b. Developed the model of the atom that we still use today
c. Shot positively charged particles at gold foil, leading to discovery of the nucleus.
d. believed that the atom was a positive clump with negative charges embedded throughout, like a "chocolate chip cookie model"