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