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WorksheetsUCEA Year 10 Atomic structure
Total questions: 20
Worksheet time: 15mins
Name
Class
Date
1.
Which particle has a positive charge?
a)
electron
b)
orbital
c)
proton
d)
neutron
2.
Choose the particle that has no charge.
a)
nucleus
b)
neutron
c)
proton
d)
electron
3.
What charge does the nucleus have and why?
a)
positive - the neutrons do not have a charge
b)
positive - the neutrons and protons are positively charged particles
c)
neutral - the neutral charge dominates the positive charge
d)
neutral - electrons cancel out the positive charge of the atom
4.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
5.
The mass of one proton is greater than the mass of one...
a)
neutron
b)
electron
6.
Which letter represents a proton?
a)
A
b)
B
c)
C
d)
D
7.
Which letter represents a neutron?
a)
A
b)
B
c)
C
d)
D
8.
Which letter represents an electron?
a)
A
b)
B
c)
C
d)
D
9.
Which letter represents the nucleus?
a)
A
b)
B
c)
D
d)
E
10.
What is the atomic mass of the atom pictured?
a)
9
b)
10
c)
18
d)
19
11.
What is the atomic number of the atom pictured?
a)
9
b)
10
c)
18
d)
19
12.
How many protons does an Aluminum atom have? (use the picture to help you)
a)
27
b)
13
c)
14
d)
40
13.
All matter is made of
a)
energy
b)
atoms
c)
air
d)
chemistry
14.
Lithium with atomic number of 3 and mass number of 7 has how many neutrons?
a)
3
b)
4
c)
10
d)
7
15.
Which scientist conducted experiments using alpha particles and thin gold foil, which later helped him develop his model for the atom?
a)
Ernest Rutherford
b)
Kneels Bore
c)
Niels Bohr
d)
Earnest Rutherfraud
16.
Which scientist discovered the electron, which helped him develop a model of the atom?
a)
Niels Bohr
b)
John Dalton
c)
Ernst Rutherford
d)
J.J Thompson
17.
What is an atom mostly made up of?
a)
protons
b)
electrons
c)
empty space
d)
neutrons
18.
This diagram shows the electron configuration of which atom?
a)
Lithium
b)
Helium
c)
Beryllium
d)
Hydrogen
19.
The first person to propose a theory about an atom was
a)
Democritus
b)
Rutherford
c)
Dalton
d)
Aristotle
20.
What do the following properties describe? : shiny, ductile, good conductor, high melting point
a)
metal
b)
nonmetal
c)
metalloid
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