Question

scientific discoveries are often built on the previous findings of other scientists. millikans oil - drop experiment occurred after thomsons cathode ray tube experiment. what did both of these experiments collectively determine about the atoms atomic structure? choose two correct answers.

• the electron has a positive charge.
• atoms contain negatively charged particles.
• the electron has a specific mass.
• the proton has a negative charge.

Explanation:

The electron has a negative charge, not positive. Atoms contain negatively - charged electrons. The electron has a specific mass. The proton has a positive charge. So the correct statements are that atoms contain negatively - charged particles and the electron has a specific mass.

Answer:

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