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