James Chadwick
When was Chadwick born?
Chadwick was born October 26, 1891.
What year was Dalton born?
Dalton was born in 1766.
What year was Ruthford born?
Ruthford was born in 1871.
What month was Thomas born in?
Thomas was born in the month of December.
Where was Bohr born?
Bohr was born in Denmark.
When did Chadwick discover his discovery?
Chadwick made his discovery in 1922.
Name two of Dalton’s discoveries.
Dalton discovered that all matter is made up of atoms and atoms cannot be created or destroyed.
What was Ruthfords contributions to matter/atomic structure?
Ruthford packed bundles of matter with positive electric charge in the nucleus
What did Thomas discover?
Thomas discovered electrons.
What were Bohr’s contributions?
Bohr’s contributions to the atomic structure were the Bohr model and how electrons orbit around the nucleus from a field distance.
Name one of Chadwick’s contributions.
Chadwick proved the existence of of neutrons.
When did Dalton discover his discovery?
Dalton made his discover in 1808.
When did Ruthford make his discovery?
Ruthford ,are his discovery in 1911.
When did Thomas make his discovery?
Thomas made his discovery in 1897
When did Bohr make his discovery?
Bohr made his discovery in 1885 on October 7th.
How did Chadwick’s discoveries differ from others?
Until 1932 the atom was believed to be composed of a positivity charged nucleus surrounded by negativity charged electrons until he bombarded beryllium atoms with alpha particles with this an unknown radiation was created and the particle soon became known as the neutron.
How did Dalton’s views differ from others?
Scientists before did not know the Law of Conservation of Mass.
Wht expriment let to Ruthfords discovery?
Ruthford expected particles to pass through with slight deflection but when they looked the particles backed back due to the mass in the nucleus.
What expriments led to Thomas’s discoveries?
Thomas experimented with a cathode ray. He demonstrated that cathode rays were negatively charged.
What was one of Bohr’s theories?
Bohr theorized that energy is transferred only in certain well defined qualities.
How did Chadwick’s structure differ from scientists?
Chadwick’s structure is still used till this day, it has not changed.
How did Dalton’s views differ from others?
Dalton did not know that atoms could be split into smaller pieces.
How did Ruthfords structure of the atom differ from the current structure used today?
Ruthford made a model with positive charge in the nucleus but current models have electrons.
How did Thomas’s views differ from scientist?
Thomas thought atoms were composed purely of negative electrons but was disapproved by Ernest Ruthford and his Gold fail expirements.
How did Bohr’s structure of of atoms differ from others?
Bohr’s structure differed as he thought the electrons orbit, where as modern structure as no orbiting.