A) 60 B) 23 C) 51 D) 50
A) 3 B) 17 C) 7 D) 1
A) 5 B) 103 C) 9 D) 45
A) 3 B) 33 C) 15 D) 4
A) Noble Gases B) Halogens C) Alkaline Earth Metals D) Alkali Metals E) Transition Metals
A) 7 B) 14.007 C) 2 D) 14
A) 56 B) 6 C) 137 D) 2
A) 1 B) 7 C) 6 D) 2
A) Phosphorus is a non-metal gas. B) Chlorine is a liquid non-metal. C) Tellurium is a solid metalloid. D) Mercury is a solid metal.
A) 5 B) 42 C) 96 D) 6
A) 7 B) 2 C) 4 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) protons and orbits B) protons and electrons C) protons and neutrons D) neutrons and electrons
A) Carbon and Boron B) Mercury and Thallium C) Phosphorus and Silicon D) Argon and Krypton
A) the atom is mostly empty space B) electrons orbit totally randomly around the nucleus C) the atom is a positively charged sphere with electrons embedded in it D) atoms are tiny solid spheres
A) region B) nucleus C) group D) period
A) Chlorine B) Magnesium C) Lithium D) Beryllium
A) period number B) number of neutrons C) number of protons D) group number
A) the same as the number of energy levels B) the mass number minus the atomic number C) greater than the mass number D) the same as the number of electrons
A) Group Number B) State of Matter C) Period Number D) Number of Neutrons
A) Nitrogen B) Carbon C) Francium 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 protons B) by losing protons C) By adding or losing electrons D) by adding electrons
A) by adding electrons B) by losing protons C) by losing electrons D) by adding protons
A) by losing electrons B) by adding electrons C) by losing protons D) by adding protons
A) by adding electrons B) by adding neutrons C) by adding protons D) by adding or losing 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) Na and Li B) Mg and F C) Hg and C D) B and O
A) Mg and Cl B) Ba and Ra C) Li and Po D) F and At
A) The alkali earth metals B) The halogens C) The transition metals D) The noble gases E) The alkali metals
A) The alkali metals B) The halogens C) The transition metals D) The noble gases
A) 18 B) 4 C) 1 D) 17 E) 8
A) how many electron levels there are B) how many electrons there are C) how many protons there are D) how reactive they 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) Iron B) Sodium C) Fluorine D) Silver E) Mercury
A) Al B) Au C) Li D) H E) F
A) Mg B) Al C) Li D) Cs E) I
A) the number of protons B) the number of electrons C) the number of neutrons
A) Lewis B) Mendeleev C) Bohr D) Dalton E) Newton |