Question

scientific discoveries are often built on the previous findings of other scientists. millikans oil drop experiment occurred after thompsons cathode ray tube experiment. what did both of these experiments collectively determine about the atoms subatomic structure? check all that apply. atoms contain negatively charged particles. the electron has a positive charge. the electron has a specific mass. the proton has a negative charge. done

Explanation:

• Thompson's cathode ray tube experiment showed that atoms contain negatively - charged particles (electrons).
• Millikan's oil drop experiment helped to calculate the charge of the electron. Using the charge - to - mass ratio of the electron (found from Thompson's work) and the charge (from Millikan's work), the mass of the electron could be determined.
• Electrons have a negative charge, not positive. Protons have a positive charge, not negative.

Answer:

Atoms contain negatively charged particles.
The electron has a specific mass.