Atomic Structure QuizOnline version Test your knowledge on the structure of atoms with this fun quiz! by Anqi 1 Which of the following regarding atomic structure theory is correct? a Atoms are very small b Atoms are charged particles c Atoms of the same element are always identical d Atoms could not join together to form a new substance 2 Which particle has a positive charge? a Proton b Neutron c Electron d Photon 3 How many pairs of shared electrons are there in a methane(CH4)molecule a 1 b 3 c 2 d 4 4 Which particle is found in the nucleus? a Photon b Neutron c Electron d Positron 5 What determines the atomic number of an element? a Mass number b Number of electrons c Number of neutrons d Number of protons 6 What is the mass of a neutron compared to a proton? a Zero b Almost equal c Much heavier d Much lighter 7 A cation of element x has 22 electrons and a mass number of 55. What is the charge on the cation if the number of neutrons is 30 a 3- b 3+ c 2+ d 2- 8 Which of the following statements about chemical reaction is incorrect? a New atoms are created b Atoms can be rearranged c Atoms of molecules can be separated d Atoms are recombined to form new compounds 9 What is the center of an element called? a Nucleus b Electron c Neutron d Proton 10 Name the element which is used as the reference for atomic mass. a Carbon b Oxygen c Helium d Chlorine
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