John Dalton
Who said all matter is made up of atoms?
John Dalton
Who discovered the electron?
J.J. Thomson
Who discovered the nucleus?
Ernest Rutherford
Who said electrons move around the nucleus?
Niels Bohr
What is the first element?
Hydrogen (H)
What year did Dalton make his atomic theory?
1808
What year did Thomson make his discovery?
1897
What year did Rutherford make his discovery?
1909
What year did Bohr make his model?
1913
What is the second element?
Helium (He)
What did Dalton say atoms cannot be?
Divided, destroyed, or created
What did Thomson discover about atoms?
They are made of smaller particles
What particle did Rutherford discover inside the nucleus?
Proton
What shape are the electron paths in Bohr’s model?
Circular
What is the fifth element?
Boron (B)
What is every substance made of, according to Dalton?
Atoms combined in certain ways
What particle did Thomson find?
Electron
What did Rutherford say atoms have?
A nucleus
What moves in Bohr’s circular paths?
Electrons
What is the eighth element?
Oxygen (O)
What did Dalton believe about matter?
All matter is made of atoms
What did Thomson prove about Dalton’s theory?
Atoms can be divided
What did Rutherford’s discovery show about the atom?
Most of it is empty space
What is at the center of Bohr’s atom model?
The nucleus
What is the 10th element?
Neon (Ne)