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WorksheetsQuiz on the Journey of Human Knowledge of the Atom
Total questions: 18
Worksheet time: 11mins
Who first proposed the idea that all matter is made up of indivisible particles called 'atomos'?
J.J. Thomson
Ernest Rutherford
Democritus
John Dalton
What did J.J. Thomson discover in the late 1800s?
The neutron
The nucleus
The proton
The electron
What model did J.J. Thomson propose?
Plum pudding model
Planetary model
Nuclear model
Quantum model
What did Ernest Rutherford's gold foil experiment reveal?
Atoms are solid
Electrons are in fixed orbits
Atoms are mostly empty space
Atoms have no nucleus
In Niels Bohr's model, how do electrons move around the nucleus?
Randomly
In pairs
In a cloud
In fixed orbits
What does the atomic number represent?
Number of electrons
Number of neutrons
Total number of particles
Number of protons
Which particles contribute to the atomic mass?
Protons and neutrons
Only protons
Electrons
Only neutrons
How many electrons can the first shell hold?
2
8
18
32
What are valence electrons?
Electrons that are lost
Electrons in the nucleus
Electrons that are gained
Electrons available for bonding
Which group of elements is known as alkali metals?
Group 18
Group 13
Group 2
Group 1
What is the significance of understanding atomic structure?
It has no real-world application
It is only important for chemists
It is crucial for science and technology
It helps in cooking
How are the elements arranged in the periodic table?
Color
Atomic number
Size
Weight
What are the two functions of neutrons in the nucleus?
They have a positive charge
They hold protons together
They contribute to the atomic mass.
They are not present in the nucleus
What is the charge of a proton?
Positive
Neutral
Variable
Negative
Which particles of the following are found inside the nucleus of an atom?
Neutron
Proton
Electron
Photon
What is the maximum number of electrons that the second shell can hold?
32
8
2
18
The number of periods in the Periodic Table represent an element's energy ...
(a)
The valence electrons of an element (except transition metals) are represented by the units of the (a) numbers.
