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 8
An atom has 6 protons, 6 neutrons, and 6 electrons. What is its atomic number?
Describe the location and charge of electrons in an atom.
Describe the role of neutrons in the nucleus of an atom.
Explain why atoms are electrically neutral.
An atom has 6 protons, 6 neutrons, and 6 electrons. What is its atomic number?
If an atom has 11 protons and 12 neutrons, what is its mass number?
If an atom has 15 protons, how many electrons does it have if it is neutral?
If an atom has 17 protons and 18 electrons, what is its charge?
What is the relative mass of a proton compared to an electron? (1) About 1 (2) About 1836 (3) About 0.0005 (4) About 100
Which of the following best describes an ion? (1) An atom with equal numbers of protons and electrons (2) An atom with more protons than neutrons (3) An atom with unequal numbers of protons and electrons (4) An atom with no neutrons
Which of the following is NOT a subatomic particle? (1) Proton (2) Neutron (3) Electron (4) Molecule
Which of the following is true about isotopes? (1) They have the same number of protons but different numbers of neutrons. (2) They have different numbers of protons and electrons. (3) They have the same number of neutrons but different numbers of protons. (4) They have different numbers of electrons only.
Fill in the blank: The ________ is the region around the nucleus where electrons are likely to be found.
Fill in the blank: The atomic number of an element is equal to the number of ________ in its atom.
The charge of a proton is ________.
The mass number of an atom is the sum of its ________ and ________.
True or False: Electrons are found in the nucleus of an atom.
True or False: Neutrons have a mass almost equal to that of protons.
True or False: The mass number of an atom is always the same as its atomic number.
True or False: The mass of an atom is mostly due to its electrons.
