1) Vertical columns in the periodic table are called a) periods b) groups c) families d) vertices 2) Horizontal rows in the periodic table are called a) periods b) groups c) families d) rows 3) The centre of the atom is known as the a) core b) orbital c) nucleus d) nuclear 4) Most of the elements on the periodic table are a) compounds b) non-metals c) unstable d) metals 5) the particles found in the nucleus are a) protons b) protons and neutrons c) protons and electrons d) neutrons 6) where are the electrons found a) energy levels b) electron shells c) rings d) outer electron shells 7) which configuration shows the maximum number of electrons allowed in the first four electron shells a) 2,8,18,28 b) 2,6,8,10 c) 2,8,8,2 d) 2,8,8,18 8) what is the atomic number equal to a) protons b) protons + neutrons c) electrons d) protons + electrons 9) What is the atomic mass number equal to a) neutrons b) protons + neutrons c) neutrons + electrons d) protons + electrons 10) what is the charge and mass of a proton a) +1 , 2 b) -1 , 1 c) +1 , 1 d) -1 , 2 11) what is the charge and mass of a neutron a) +1 , 0 b) 0 , +1 c) +1 , -1 d) 0 , 1 12) what is the charge and mass of an electron a) +1 , 0 b) 0 , +1 c) -1 , 0 d) 0 , -1 13) Elements in the same group have a) similar appearances b) similar chemical properties c) similar physical properties d) similar reactions

c1 1.1-1.3

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