Question

Why did Thomson’s results from experimenting with cathode rays cause a big change in scientific thought about atoms?

His results gave people a picture of what atoms look like for the first time.
His results gave the first clues that atoms could be created and destroyed.
His results gave the first experimental evidence that matter is made up of atoms.
His results gave the first evidence that atoms were made up of smaller particles.

Answer 1

The correct option is D) His results gave the first evidence that atoms were made up of smaller particles.

Step-by-step explanation:

Answer 2

The correct option is D) His results gave the first evidence that atoms were made up of smaller particles.

Step-by-step explanation:

Before the experiments performed by Thomson,scientists believed that atoms were the smallest particles with no sub units. The experiments performed by Thomson provided evidence that atom is made up of even smaller particles. The cathode ray experiment performed by Thomson led to the discovery of electrons which are the negatively charged particles of an atom. The protons are the positively charged particles of an atom. Whereas, the neutrons have no charge.