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