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