Into the Atom

The atomic nucleus

Positively charged protons

Negatively charged electrons

The existence of radioactivity

He was the first in his family to pursue a career in science.

He earned a degree in chemistry from Cambridge University.

Both of his grandfathers were members of the Royal Society.

He was raised by his father, who was a famous biologist.

Discovering the neutron.

Winning the Nobel Prize for his work on radioactivity.

Developing the first atomic bomb.

Inventing the Geiger counter.

All alpha particles passed directly through the gold foil.

The gold foil emitted its own alpha particles.

Some alpha particles bounced back from the gold foil.

The alpha particles changed into beta particles after hitting the foil.

It is a solid, uniformly dense sphere.

It is mostly empty space with a tiny, dense, positively charged center.

It consists of electrons embedded in a positively charged "pudding."

It is composed of a central nucleus with neutrons and protons, and electrons orbiting randomly.

Developing new types of prisms for light diffraction.

Radioactivity research, which he found somewhat unexciting.

Investigating the properties of X-rays from Germany.

Mathematical calculations for atomic structures.

X-rays could be split into a rainbow of colors, similar to visible light.

X-rays could be used to create X-ray images of bones.

X-rays could be diffracted by a crystal, producing a symmetrical pattern of spots.

X-rays were found to be a form of particle radiation, not waves.

Atoms in a crystal are randomly distributed, causing irregular X-ray scattering.

Atoms in a crystal are neatly arranged in rows that reflect X-rays to create a pattern of spots.

Atoms in a crystal absorb X-rays completely, preventing any pattern formation.

Atoms in a crystal vibrate too rapidly to produce a stable X-ray diffraction pattern.

Yes

No

To determine the atomic weight of unknown elements.

To identify if each element possessed a unique X-ray spectrum.

To measure the speed of electrons in a vacuum tube.

To observe the diffraction patterns of light through crystals.