WorksheetsG7 T1 L1 U1
Total questions: 14
Worksheet time: 7mins
The Sphinx statue is made of sandstone.
true
false
(8) The nucleus of tritiumn atom contains one proton and one neutron.
true
false
(9) Chlorine -37 differs from chlorine -35 in having a greater number of protons.
true
false
6) The chemical symbol of magnesium is MG
true
false
(5) The proton is the subatomic particle which has the smallest mass.
true
false
(4) The masses of subatomic particles are measured in milliliters
true
false
The Sphinx statue is made of sandstone.
true
false
(3) The Greek philosophers believed that matter was made of indivisible part
molecules.
true
false
(2) Matter is composed of atoms, which in turn are composed of smaller unit
called molecules.
true
false
() What is the subatomic component that has the smallest mass ?
Electron
Nucleon
Proton
Neutron
(2) Which of the following subatomic components has a mass of 1u?
Each of neutron and proton
Proton only
Each of neutron and electron
Electron only
(5) The nucleus of potassium atom contains 19 protons, then the electron with
the highest energy in this atom is found in the
...
second energy level.
First energy level.
Fourth energy level.
Third energy level.
Which of the following atoms has number of neutrons equals twice the number of protons in it's nucleus
A
B
C
D
(6) What is the number that is the same in all the atoms of the same element ?
Mass number
Number of electrons
Number of nucleons
Number of neutrons
