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