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