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