A) 60 B) 23 C) 50 D) 51
A) 1 B) 17 C) 7 D) 3
A) 45 B) 5 C) 103 D) 9
A) 15 B) 3 C) 4 D) 33
A) Halogens B) Alkali Metals C) Noble Gases D) Alkaline Earth Metals E) Transition Metals
A) 2 B) 14.007 C) 7 D) 14
A) 6 B) 56 C) 137 D) 2
A) 6 B) 7 C) 2 D) 1
A) Tellurium is a solid metalloid. B) Mercury is a solid metal. C) Chlorine is a liquid non-metal. D) Phosphorus is a non-metal gas.
A) 42 B) 6 C) 96 D) 5
A) 3 B) 7 C) 4 D) 2
A) proton/+, electron/neutral, neutron/- B) proton/+, neutron/-, electron/no charge C) proton/+, electron/-, neutron/uncharged D) proton/-, electron/+, neutron/no charge
A) protons and electrons B) neutrons and electrons C) protons and orbits D) protons and neutrons
A) Mercury and Thallium B) Argon and Krypton C) Phosphorus and Silicon D) Carbon and Boron
A) atoms are tiny solid spheres B) the atom is a positively charged sphere with electrons embedded in it C) the atom is mostly empty space D) electrons orbit totally randomly around the nucleus
A) group B) region C) period D) nucleus
A) Beryllium B) Magnesium C) Lithium D) Chlorine
A) number of protons B) period number C) number of neutrons D) group number
A) the same as the number of electrons B) the mass number minus the atomic number C) greater than the mass number D) the same as the number of energy levels
A) Group Number B) Number of Neutrons C) Period Number D) State of Matter
A) Manganese B) Francium C) Nitrogen D) Carbon
A) Yes, some Carbon atoms have 6 protons, some have 7 protons. B) No, every single Carbon atom has exactly 6 protons. An atom's atomic number gives it its identity.
A) by adding protons B) by losing protons C) by adding electrons D) By adding or losing electrons
A) by losing electrons B) by adding protons C) by adding electrons D) by losing protons
A) by adding electrons B) by adding protons C) by losing protons D) by losing electrons
A) by adding protons B) by adding electrons C) by adding neutrons D) by adding or losing neutrons
A) same as the atomic number B) same as the mass number C) mass number divided by 2 D) difference between the atomic and mass number
A) the same as the mass number B) the same as the number of neutrons C) the difference between the mass and atomic number D) the same as the atomic number
A) Na and Li B) Hg and C C) B and O D) Mg and F
A) Mg and Cl B) Li and Po C) F and At D) Ba and Ra
A) The halogens B) The transition metals C) The alkali earth metals D) The alkali metals E) The noble gases
A) The alkali metals B) The transition metals C) The noble gases D) The halogens
A) 4 B) 17 C) 8 D) 18 E) 1
A) how many electrons there are B) how reactive they are C) how many electron levels there are D) how many protons there are
A) how many valence electrons the atom has B) the number of protons C) the number of neutrons D) how many electrons the atom has
A) Fluorine B) Iron C) Mercury D) Silver E) Sodium
A) H B) Al C) Li D) F E) Au
A) Mg B) Cs C) I D) Al E) Li
A) the number of protons B) the number of neutrons C) the number of electrons
A) Newton B) Mendeleev C) Bohr D) Dalton E) Lewis |