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WorksheetsAtomic structure
Total questions: 20
Worksheet time: 11mins
If atom has 12 positively charged subatomic particles, which of the following have to be considered neutral atom?
12 neutrons
24 protons and neutrons
12 electrons
12 protons
What is the atomic structure of lithium?
2,1
2,5
2,7
2,6
Most of the mass in an atom is made up of___
protons and neutrons
neutrons and electrons
protons and electrons
electrons and quarks
In order for atom to be neutral what has to be true?
The atoms has the same number of protons and neutrons
The atom has more neutrons than protons
The atom has the same number of protons and electrons
The atom has more protons than neutrons
What is the atomic number
The number of neutrons in the nucleus
The number of protons and neutrons in the nucleus
The number of protons in the energy level
The number of protons in the nucleus
What does the C represent?
Atomic mass
Element name
Atomic number
Chemical symbol
What is the mass number
The number of protons and neutrons in the nucleus
The number of protons in the nucleus
The number of neutrons in the nucleus
The number of protons and electrons in an atom
Mass number of lithium
1
4
3
7
Atomic number of carbon
12
6
4
unknown
Where is the most of the mass in an atom located?
In the nucleus
In the neutrons
In the protons
In the electrons
What does the 12 represent?
Atomic number
Number of electrons
Number of neutrons
Mass number
How many electrons does lithium have?
3
5
1
7
Which subatomic particles contribute the most to the mass of an atom?
Protons, neutrons, electrons
Protons
Electrons
Neutrons
How is the number of neutrons in the nucleus of an atom calculated?
Add the mass number to the number of e-
Add the number of e- add p+ together
Subtract the number of p+ from the mass number
Subtract the number of e- from p+
An atom has 10 protons, 15 neutrons and 10 electrons what is the mass number
35
20
25
15
What subatomic particle would you find in the nucleus?
Neutrons and protons
Electrons
Electron shells
my love
The atomic number of an element that has 9 protons, 9 electrons and 10 neutron is ____
10
9
19
0
An atom has an atomic number of 15 and a mass number of 31. How many protons are there in the atom?
16
31
46
15
An element with a mass number of 11 and an atomic number of 5 has how many neutrons?
16
6
5
11
Which of the following determines the identity of an element?
pronouns.
number of proton
number of shells
number of neutrons
