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