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Lembar kerjaAtom structure and periodic table
Total soal: 18
Worksheet time: 11mins
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Kelas
Tanggal
1.
Which subatomic particles contribute the most to the mass of an atom?
a)
Protons, Neutrons, Electrons
b)
Protons only
c)
Protons and Electrons
d)
Protons and Neutrons
2.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
3.
Which letter represents a proton?
a)
A
b)
B
c)
C
d)
D
4.
Which subatomic particle has a negative (-) charge?
a)
Proton
b)
Electron
c)
Neutron
5.
The horizontal row on the periodic table is called a
a)
group
b)
family
c)
period
d)
atomic number
6.
Which group of the periodic table is composed of inert (not reactive) gases?
a)
alkali metals
b)
alkaline earth metals
c)
halogens
d)
noble gases
7.
Elements which are shiny, conduct electricity and heat are called
a)
metal
b)
nonmetal
c)
metalloid
d)
nonexistent
8.
In what section would Noble Gases be found?
a)
white
b)
yellow
c)
blue
d)
red
9.
Silicon has an atomic number of 14 and an atomic mass of 28. How many neutrons does it have?
a)
14
b)
28
c)
2
d)
10
10.
Which of the following is the electron configuration for Magnesium, Mg? (Atomic number 12)
a)
2-4-4
b)
2-8-2
c)
2-8
d)
2-4-6
11.
Which is an electron?
a)
A
b)
B
c)
C
12.
Elements in the same group have the same
a)
Properties
b)
Number of electrons
c)
Number of protons
d)
Nucleus
13.
How are the elements in the modern periodic table arranged?
a)
atomic mass
b)
chemical symbol
c)
element's name
d)
atomic number
14.
How many electron shells/levels does this atom have?
a)
1
b)
2
c)
3
d)
4
15.
The atomic number of an element that has 9 protons, 9 electrons, and 10 neutrons is _____.
a)
9
b)
10
c)
19
d)
28
16.
The electronic configuration of Ca is?
a)
2,8,8,2
b)
2,8,8,8,8,6
c)
2,8,8
17.
Na (11)
a)
2,8,1
b)
3,8
c)
2,9
d)
2,7,2
18.
The atomic number of this element is___________and it is located in group ____________
a)
5 and group 2
b)
7 and group 7
c)
7 - group 5
d)
7 and group 2
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