Subatomic Particles
Chemistry ⇒ Atomic Structure and the Periodic Table
Subatomic Particles starts at 7 and continues till grade 12.
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See sample questions for grade 11
Describe the difference between an ion and an atom in terms of subatomic particles.
Describe the role of neutrons in the nucleus.
Explain why atoms are electrically neutral.
State the location of electrons in an atom.
A neutral atom of carbon has 6 protons and 6 neutrons. How many electrons does it have?
An atom of sodium has 11 protons, 12 neutrons, and 11 electrons. What is its mass number?
Calculate the number of neutrons in an atom of chlorine-37 (atomic number 17).
If an atom has 15 protons, 16 neutrons, and 18 electrons, what is its net charge?
Which of the following best describes the nucleus of an atom?
(1) Contains only protons
(2) Contains protons and neutrons
(3) Contains electrons and protons
(4) Contains only neutrons
Which of the following is NOT a subatomic particle?
(1) Proton
(2) Neutron
(3) Electron
(4) Molecule
Which of the following statements about isotopes is correct?
(1) Isotopes have different numbers of protons
(2) Isotopes have different numbers of neutrons
(3) Isotopes have different numbers of electrons
(4) Isotopes have different atomic numbers
Which of the following statements is correct?
(1) Protons and electrons have the same mass
(2) Neutrons are heavier than protons
(3) Electrons are found in the nucleus
(4) Protons and neutrons have nearly equal mass
Fill in the blank: The ______ is the region of the atom where electrons are most likely to be found.
Isotopes of an element have the same number of ______ but different number of ______.
The atomic number of an element is equal to the number of ______ in its atom.
The mass number of an atom is the sum of its ______ and ______.
True or False: All atoms of the same element have the same number of protons.
True or False: Neutrons are found in the nucleus of an atom.
True or False: The mass of an electron is approximately 1/1836 that of a proton.
True or False: The number of electrons in a neutral atom equals the number of protons.
