Subatomic Particles
Chemistry ⇒ Atomic Structure and the Periodic Table
Subatomic Particles starts at 7 and continues till grade 12.
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Describe the difference between a cation and an anion in terms of subatomic particles.
Describe the location of electrons in an atom according to the modern atomic model.
Describe the role of electrons in the formation of ions.
Explain the difference between atomic number and mass number.
Explain why atoms are electrically neutral.
Explain why isotopes of the same element have similar chemical properties.
What is the charge on a proton?
What is the relative charge of a neutron?
Which of the following best describes an isotope?
(1) Atoms with the same number of protons but different numbers of neutrons
(2) Atoms with the same number of neutrons but different numbers of protons
(3) Atoms with the same number of electrons but different numbers of protons
(4) Atoms with different numbers of protons and electrons
Which of the following is the correct symbol for a proton?
(1) p+
(2) n0
(3) e-
(4) α
Which of the following is true about the mass of an electron?
(1) It is nearly equal to the mass of a proton.
(2) It is much less than the mass of a proton.
(3) It is greater than the mass of a neutron.
(4) It is equal to the mass of a neutron.
Which of the following particles has the least mass?
(1) Proton
(2) Neutron
(3) Electron
(4) Alpha particle
Fill in the blank: The ______ is the subatomic particle that has no electrical charge.
Fill in the blank: The ______ is the subatomic particle that orbits the nucleus.
Fill in the blank: The atomic number of an element is equal to the number of ______ in its nucleus.
Fill in the blank: The number of ______ in an atom determines its chemical identity.
Is it true that isotopes of an element have the same number of protons but different numbers of neutrons?
State whether the following statement is true or false: Neutrons are found in the nucleus of an atom.
State whether the following statement is true or false: The mass of a neutron is slightly greater than that of a proton.
State whether the following statement is true or false: The nucleus of an atom contains all the positive charge and most of the mass of the atom.
