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