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WorksheetsATOMIC STRUCTURE(CLASS7)
Total questions: 10
Worksheet time: 6mins
The center of an atom is known as the
nucleus
electron cloud
neutron cloud
home for sub-particles of atom
Subatomic particles with a negative charge
Electrons
Neutrons
Protons
Quarks
Which of the following makes up the nucleus of an atom?
protons and neutrons
protons and electrons
neutrons only
protons only
The picture shows a model of a helium atom and a lithium atom. Which of the following statements is true about the lithium and helium atoms?
Helium has more protons, neutrons, and electrons.
Lithium is much smaller than helium.
There is no difference between helium and lithium.
Lithium has more protons, neutrons, and electrons
The part of an atom that would be found outside the nucleus is the ______.
neutron
proton
electron
second nucleus
In the modern periodic table elements are arranged by:
atomic mass
atomic number
valence electrons
alphabetical order
Arrange the following with reference to their meanings.
Column A
1)- J. J. Thomson-
2)- Goldstein-
3)- Rutherford-
4)- James Chadwick-
Column B
a)- Discovery of Protons
b)- Discovery of Atomic Nucleus
c)- Discovery of Neutrons
d)- Discovery of Electrons
1)- J. J. Thomson-Discovery of Atomic Nucleus
2)- Goldstein-Discovery of Electrons
3)- Rutherford-
4)- James Chadwick-Discovery of Protons
1)- J. J. Thomson-Discovery of Electrons
2)- Goldstein-Discovery of Protons
3)- Rutherford-Discovery of Atomic Nucleus
4)- James Chadwick-Discovery of Neutrons
1)- J. J. Thomson-Discovery of Protons
2)- Goldstein-Discovery of Neutrons
3)- Rutherford-Discovery of Electrons
4)- James Chadwick-Discovery of Atomic Nucleus
1)- J. J. Thomson-Discovery of Atomic Nucleus
2)- Goldstein-Discovery of Neutrons
3)- Rutherford-Discovery of Protons
4)- James Chadwick-Discovery of Electrons
