A) 51 B) 23 C) 50 D) 60
A) 17 B) 3 C) 7 D) 1
A) 5 B) 9 C) 45 D) 103
A) 33 B) 4 C) 15 D) 3
A) Halogens B) Alkali Metals C) Alkaline Earth Metals D) Noble Gases E) Transition Metals
A) 14 B) 14.007 C) 7 D) 2
A) 6 B) 56 C) 2 D) 137
A) 2 B) 1 C) 7 D) 6
A) Mercury is a solid metal. B) Chlorine is a liquid non-metal. C) Phosphorus is a non-metal gas. D) Tellurium is a solid metalloid.
A) 6 B) 96 C) 42 D) 5
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 electrons B) protons and orbits C) protons and neutrons D) neutrons and electrons
A) Argon and Krypton B) Carbon and Boron C) Phosphorus and Silicon D) Mercury and Thallium
A) atoms are tiny solid spheres B) the atom is mostly empty space C) the atom is a positively charged sphere with electrons embedded in it D) electrons orbit totally randomly around the nucleus
A) period B) region C) nucleus D) group
A) Chlorine B) Beryllium C) Magnesium D) Lithium
A) group number B) number of neutrons C) number of protons D) period number
A) greater than the mass number B) the same as the number of energy levels C) the mass number minus the atomic number D) the same as the number of electrons
A) Group Number B) State of Matter C) Period Number D) Number of Neutrons
A) Manganese B) Carbon C) Nitrogen D) Francium
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 adding protons B) by losing protons C) by adding electrons D) by losing electrons
A) by losing electrons B) by losing protons C) by adding protons D) by adding electrons
A) by adding protons B) by adding or losing neutrons C) by adding electrons D) by adding neutrons
A) same as the mass number B) difference between the atomic and mass number C) mass number divided by 2 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 number of neutrons D) the same as the atomic number
A) B and O B) Na and Li C) Hg and C 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 halogens C) The transition metals D) The alkali metals E) The noble gases
A) The alkali metals B) The noble gases C) The halogens D) The transition metals
A) 17 B) 4 C) 8 D) 18 E) 1
A) how many electron levels there are B) how reactive they are C) how many protons there are D) how many electrons there are
A) how many valence electrons the atom has B) the number of protons C) the number of neutrons D) how many electrons the atom has
A) Silver B) Fluorine C) Sodium D) Mercury E) Iron
A) F B) Au C) H D) Li E) Al
A) Li B) Mg C) Al D) Cs E) I
A) the number of protons B) the number of neutrons C) the number of electrons
A) Bohr B) Mendeleev C) Newton D) Dalton E) Lewis |