WorksheetsCFA #8- Atomic Structure and Energy Transformations
Total questions: 20
Worksheet time: 16mins
What is the mass number of this atom?
1
3
4
7
If an atom has 10 electrons, how many protons does it have?
0
1
10
5
Which 2 elements have a combined total of 12 electrons?
Nitrogen (N) and Boron (B)
Carbon (C) and Boron (B)
Oxygen (O) and Carbon (C)
Nitrogen (N) and Carbon (C)
Which 2 elements have a difference of 7 electrons?
Phosphorous (P) and Oxygen (O)
Phosphorous (P) and Carbon (C)
Oxygen (O) and Helium (He)
Nitrogen (N) and Carbon (C)
What is the difference between the number of protons in an atom of Silicon (Si) and Zinc (Zn)?
16
14
30
26
What is the combined total number of protons in an atom of Chlorine (Cl) and Aluminum (Al)?
30
28
35
27
Which atom represents an atom of carbon with a mass number of 13?
Which atom represents an atom of hydrogen with a mass number of 2?
How many subatomic particles are in an atom of Tin (Sn) with a mass number of 118?
P= 50, N= 68, E= 50
P= 50, N= 50, E= 50
P= 50, N= 50, E= 68
P= 68, N= 50, E= 50
How many protons, neutrons, and electrons are in an atom of Bromine (Br) with a mass number of 80?
P= 35, N= 45, E= 35
P= 45, N= 35, E= 35
P= 35, N= 35, E= 45
P= 35, N= 35, E= 35
What is the mass number of an atom that contains 18 protons, 22 neutrons, and 18 electrons?
36
22
40
4
An atom containing 11 protons, 12 neutrons, and 11 electrons is extremely reactive in water. What is the mass number of this atom?
23
22
24
1
An atom with a mass number of 15 and 8 electrons is extremely flammable. How many neutrons are in this atom?
15
8
7
23
a neutral nucleus surrounded by a hard negative shell
a positive nucleus surrounded by a cloud of negative charges
a hard sphere with positive and negative charges on the outside
a negative nucleus surrounded by protons and neutrons
Which of the following describes an electron?
It has no charge and the same mass of a proton
It has a negative charge and very little mass.
It has a positive charge and more mass than a neutron.
It has a negative charge and more mass than the nucleus.
