Quiz: Atomic Theory Quiz


Atomic Theory QuizOnline version Fundamentals of atoms by Farrah Jane Gonzales 1 Who proposed that matter is made of indivisible units called atoms? a Ernest Rutherford b J.J. Thomson c John Dalton d Democritus 2 Which scientist proposed the first modern atomic theory with a central nucleus from experiments? a Niels Bohr b Ernest Rutherford c John Dalton d J.J. Thomson 3 What subatomic particle carries a positive charge and resides in the nucleus? a Neutron b Electron c Proton d Positron 4 Which subatomic particle has no electric charge? a Positron b Electron c Neutron d Proton 5 Which model introduced electrons in fixed orbits around the nucleus? a Rutherford model b Thomson model c Quantum mechanical model d Bohr model 6 What is the total number of protons in an atom called? a Charge number b Atomic number c Isotopic number d Mass number 7 What is the total number of protons and neutrons in an atom's nucleus called? a Charge number b Atomic number c Mass number d Electron count 8 Isotopes differ in which property? a Number of neutrons b Electron energy levels c Charge d Number of protons 9 What is the negatively charged subatomic particle called? a Proton b Neutron c Positron d Electron 10 Which experiment revealed the existence of a small, dense nucleus in the atom? a Cathode-ray tube experiment b Gold foil experiment c Oil drop experiment d Double-slit experiment Feedback 1 Democritus introduced the idea of indivisible atoms in ancient Greece; later revised by modern science. 2 Rutherford's gold foil experiment led to the nuclear model with a dense nucleus. 3 Protons live in the nucleus and have a +1 charge. 4 Neutrons are neutral and contribute to atomic mass. 5 Bohr proposed quantized orbits; later models replaced it. 6 Atomic number equals the number of protons and defines the element. 7 Mass number = protons + neutrons. 8 Isotopes have same number of protons but different neutrons. 9 Electrons orbit the nucleus and carry a negative charge. 10 Rutherford's gold foil experiment showed a dense nucleus with mostly empty space.

1

Who proposed that matter is made of indivisible units called atoms?

a

Ernest Rutherford

b

J.J. Thomson

c

John Dalton

d

Democritus

2

Which scientist proposed the first modern atomic theory with a central nucleus from experiments?

a

Niels Bohr

b

Ernest Rutherford

c

John Dalton

d

J.J. Thomson

3

What subatomic particle carries a positive charge and resides in the nucleus?

a

Neutron

b

Electron

c

Proton

d

Positron

4

Which subatomic particle has no electric charge?

a

Positron

b

Electron

c

Neutron

d

Proton

5

Which model introduced electrons in fixed orbits around the nucleus?

a

Rutherford model

b

Thomson model

c

Quantum mechanical model

d

Bohr model

6

What is the total number of protons in an atom called?

a

Charge number

b

Atomic number

c

Isotopic number

d

Mass number

7

What is the total number of protons and neutrons in an atom's nucleus called?

a

Charge number

b

Atomic number

c

Mass number

d

Electron count

8

Isotopes differ in which property?

a

Number of neutrons

b

Electron energy levels

c

Charge

d

Number of protons

9

What is the negatively charged subatomic particle called?

a

Proton

b

Neutron

c

Positron

d

Electron

10

Which experiment revealed the existence of a small, dense nucleus in the atom?

a

Cathode-ray tube experiment

b

Gold foil experiment

c

Oil drop experiment

d

Double-slit experiment

Feedback

1

Democritus introduced the idea of indivisible atoms in ancient Greece; later revised by modern science.

2

Rutherford's gold foil experiment led to the nuclear model with a dense nucleus.

3

Protons live in the nucleus and have a +1 charge.

4

Neutrons are neutral and contribute to atomic mass.

5

Bohr proposed quantized orbits; later models replaced it.

6

Atomic number equals the number of protons and defines the element.

7

Mass number = protons + neutrons.

8

Isotopes have same number of protons but different neutrons.

9

Electrons orbit the nucleus and carry a negative charge.

10

Rutherford's gold foil experiment showed a dense nucleus with mostly empty space.

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Atomic Theory Quiz

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Atomic Theory QuizOnline version

by Farrah Jane Gonzales

Who proposed that matter is made of indivisible units called atoms?

Which scientist proposed the first modern atomic theory with a central nucleus from experiments?

What subatomic particle carries a positive charge and resides in the nucleus?

Which subatomic particle has no electric charge?

Which model introduced electrons in fixed orbits around the nucleus?

What is the total number of protons in an atom called?

What is the total number of protons and neutrons in an atom's nucleus called?

Isotopes differ in which property?

What is the negatively charged subatomic particle called?

Which experiment revealed the existence of a small, dense nucleus in the atom?

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