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