Science, History of the Atom, Scientists

Question 1

What were Dalton’s main points?

Answer 1

1. All matter is composed of atoms
2. Atoms are indivisible and indestructible
3. Conservation of mass
4. All atoms of the same element have the same mass and are distinct from other atoms
5. Atoms can combine to form compounds
6. Chemical reactions cause the rearrangement of atoms

Question 2

What were Thomson’s main points?

Answer 2

1. Subatomic particle inside of atoms: the electron
2. Atoms are uniform, positively charged spheres with embedded, negatively charged electrons

Question 3

What were Rutherford’s main points?

Answer 3

1. Positively charged nucleus in the middle of every atom holds most of the atom’s mass
2. Protons exist inside of the nucleus
3. Neutrons might exist inside of the nucleus
4. Experiment used to prove protons: firing alpha particles onto gold foil and observing how they scatter backwards

Question 4

What were Bohr’s main points?

Answer 4

1. Electrons orbit the nucleus in shells
2. Prediction of the electron behavior using Planck’s knowledge

Question 5

What were Chadwick’s main points?

Answer 5

1. Proved the existence of neutrons within the nucleus
2. How neutrons contribute to the overall mass of atoms
3. Used the neutron chamber to experiment

Question 6

When was Dalton?

Answer 6

Kanada (600 BCE)
Democritus (430 BCE)
Jabir Ibn Hayyan (idk)
Dalton (1807)
Avogadro (1811)
Mendeleev (1868)
Thomson (1897)
Curie (1898)
Planck (1899)
Rutherford (1911)
Bohr (1913)
Chadwick (1932)
Youkawa (1935)
Meitner (1938)

Question 7

When is Thomson?

Answer 7

Kanada (600 BCE)
Democritus (430 BCE)
Jabir Ibn Hayyan (idk)
Dalton (1807)
Avogadro (1811)
Mendeleev (1868)
Thomson (1897)
Curie (1898)
Planck (1899)
Rutherford (1911)
Bohr (1913)
Chadwick (1932)
Youkawa (1935)
Meitner (1938)

Question 8

When is Rutherford?

Answer 8

Kanada (600 BCE)
Democritus (430 BCE)
Jabir Ibn Hayyan (idk)
Dalton (1807)
Avogadro (1811)
Mendeleev (1868)
Thomson (1897)
Curie (1898)
Planck (1899)
Rutherford (1911)
Bohr (1913)
Chadwick (1932)
Youkawa (1935)
Meitner (1938)

Question 9

When is Bohr?

Answer 9

Kanada (600 BCE)
Democritus (430 BCE)
Jabir Ibn Hayyan (idk)
Dalton (1807)
Avogadro (1811)
Mendeleev (1868)
Thomson (1897)
Curie (1898)
Planck (1899)
Rutherford (1911)
Bohr (1913)
Chadwick (1932)
Youkawa (1935)
Meitner (1938)

Question 10

When is Chadwick?

Answer 10

Kanada (600 BCE)
Democritus (430 BCE)
Jabir Ibn Hayyan (idk)
Dalton (1807)
Avogadro (1811)
Mendeleev (1868)
Thomson (1897)
Curie (1898)
Planck (1899)
Rutherford (1911)
Bohr (1913)
Chadwick (1932)
Youkawa (1935)
Meitner (1938)