1) Which of the following does the nucleus contain? a) protons and electrons b) protons and neutrons c) neutrons and electrons 2) Which of the following statements is correct? a) Protons have a positive charge and neutrons are negative b) Protons have a negative charge and electrons are positive c) Protons have a positive charge and electrons are negative 3) What is the atomic number? a) The number of atoms it contains? b) The number of protons it contains? c) The number of neutrons it contains? 4) In an atom: a) number of protons = number of electrons b) number of protons = number of neutrons c) Number of neutrons = number of electrons 5) What is the charge on an electron? a) +1 b) -1 c) 0 6) What is the charge on a neutron? a) +1 b) -1 c) 0 7) What is the charge on a proton? a) +1 b) -1 c) 0

Atomic structure

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