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WorksheetsSubatomic Particles
Total questions: 26
Worksheet time: 13mins
Determine which of the following subatomic particle is the heaviest?
Proton
Neutron
Electron
Proton and neutron
Which of the following subatomic particles is located in the nucleus of an atom and has a positive charge?
Electron
Neutron
Proton
Ion
Which subatomic particles can be found in the nucleus of an atom?
protons only
neutrons only
protons and electrons
protons and neutrons
Which of the following subatomic particles has no net electrical charge?
Proton
Electron
Neutron
Ion
Which of the following statements below describes the arrangement of the elements in the Periodic Table of Elements according to its increasing number of atomic number?
Elements are arranged in vertical columns (groups) with similar chemical properties and horizontal rows (periods) reflecting increasing atomic number.
Elements are arranged in horizontal rows (periods) with similar chemical properties and vertical columns (groups) reflecting increasing atomic number.
Elements are arranged randomly, with no correlation between position and atomic number.
Elements are arranged in a spiral pattern, reflecting increasing atomic mass.
What does the atomic number of an element describe?
The number of neutrons.
The number of protons.
The number of protons and neutrons.
The number of electrons.
Which of the following statements are FALSE about the subatomic particles?
The mass of an atom is concentrated at the nucleus.
Electrons and protons are located within the nucleus.
Proton has approximately the same mass with neutron.
The charge of electron is opposite to the charge of proton.
What would happen if an atom loses an electron?
The atom will become negatively charged because it has lost an electron.
The atom will become positively charged because it has lost an electron.
The atom will lose the same number of protons to keep the charge neutral.
The charge of the atom does not change because an electron has no charge.
Why are atoms considered as electrically neutral?
It is because all atoms contain neutrons.
It is because there is an equal number of protons and electrons.
It is because all subatomic particles lose their charges once they enter an atom.
It is because the number of subatomic particles in the nucleus is always an even number.
How do you determine the number of neutrons in an atom?
Add the atomic number and mass number.
Subtract the atomic number from the mass number.
The neutron number is the same as the atomic number.
The neutron number is the same as the amount of electrons.
What changes when an atom gains or loses electrons to become an ion?
The number of protons in the nucleus.
The number of neutrons in the nucleus.
The number of electrons surrounding the nucleus.
The total mass of the nucleus.
Which two subatomic particles would be attracted to each other?
Electrons and Protons
Protons and Neutrons
Electrons and Neutrons
Protons, Electrons, and Neutrons
Sir Charles wants to identify an element that has atomic number equal to 10 and a mass number of 15. Which of the following will correctly describe the element in terms of the number and type of particles present?
10 protons and 10 neutrons
10 protons and 5 neutrons
10 protons and 25 neutrons
10 protons and 125 electrons
A chemist is working with a solution containing magnesium ions (Mg2+). If a magnesium ion has 12 protons, how many electrons does it have?
10 electrons
12 electrons
14 electrons
24 electrons
A research lab is studying the behavior of a chloride ion (Cl ¹⁻). If a chloride ion has 17 protons, how many electrons does it possess?
16 electrons
17 electrons
18 electrons
35 electrons
A magnesium ion has 12 protons and 10 electrons. What is the charge of the ion?
-2
-1
+2
+1
How many electrons does a calcium ion (Ca²⁺) have? If Calcium has an atomic number of 20.
18 electrons
20 electrons
22 electrons
24 electrons
How does the number of protons in an ion compare to that in its neutral atom?
It is the same.
It is always smaller.
It is always greater.
It depends on the charge.
A neutral atom has 15 protons. If it gains 3 electrons, which of the following statements accurately describes the resulting ion?
It has a +3 charge.
It has a -3 charge.
It remains neutral.
The proton count changes.
An atom has a mass number of 28 and 14 protons. Which of the following statements can be analyzed to be true?
The atom has 14 electrons and 14 neutrons.
The atom has 28 neutrons.
The atom is an ion.
The atom has 14 neutrons and 14 electrons if neutral.
An atom of element 'X' has an atomic number of 17 and forms an ion with 18 electrons. Which of the following is TRUE?
The ion has a +1 charge.
The ion has a -1 charge.
The atom has lost one electron.
The atom has 18 neutrons.
A neutral atom has 22 protons and 26 neutrons. If this atom loses two electrons, which of the following statements is correct?
The atom is now an anion.
The mass number has decreased by 2.
The charge of the atom is now +2.
The atom has become an isotope of another element.
A student claims that Iron (Fe) has 30 neutrons, 26 protons and electrons. Which of the following is TRUE?
The claim is incorrect because iron’s mass number is 26.
The claim is correct because iron atom have 26 electrons.
The claim is incorrect because mass number determines electron count.
The claim is incorrect because iron has 56 electrons in total.
Which of the following statements most accurately reflects the relationship between the types of subatomic particles and their respective electrical charges?
There are three fundamental subatomic particle types, and all three carry a significant electrical charge, contributing equally to the atom's overall charge.
There are three fundamental subatomic particle types, and only one of these carries an electrical charge, which is responsible for the atom's reactivity.
There are three fundamental subatomic particle types, and two of these carry electrical charges, leading to the possibility of both positive and negative ions.
There are three fundamental subatomic particle types, and none of these carry an electrical charge, explaining why atoms are generally neutral.
A researcher identifies Silicon and states that it has 14 protons, 13 neutrons, and 14 electrons in its neutral state. Which of the following BEST describe this statement?
The statement is correct because the atomic number of silicon is 14.
The statement is incorrect because the number of neutrons should be 14, not 13.
The statement is incorrect because a neutral silicon atom should have 13 electrons, not 14.
The statement is correct because the mass number is found by adding protons and electrons.
Which of the following statements explains why the nucleus is significantly smaller than the atom, yet contains the vast majority of its mass?
The nucleus is composed of protons and neutrons, which are significantly less massive than electrons, and are concentrated in a small volume due to their strong electromagnetic repulsion.
The nucleus contains primarily electrons, which are densely packed and contribute the most to the atom's mass, while the much larger electron cloud is relatively empty space.
The nucleus is composed of protons and neutrons, which are significantly more massive than electrons, and are held together by the strong nuclear force in a very small volume.
The nucleus contains protons and neutrons, which contribute equally to the atom's mass, and are distributed evenly throughout the atom, taking up a small volume.
