A) 51 B) 60 C) 23 D) 50
A) 3 B) 1 C) 7 D) 17
A) 5 B) 103 C) 45 D) 9
A) 33 B) 15 C) 4 D) 3
A) Alkaline Earth Metals B) Halogens C) Noble Gases D) Transition Metals E) Alkali Metals
A) 14.007 B) 2 C) 7 D) 14
A) 6 B) 56 C) 137 D) 2
A) 7 B) 2 C) 1 D) 6
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) 96 B) 42 C) 6 D) 5
A) 4 B) 3 C) 2 D) 7
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 neutrons B) protons and orbits C) neutrons and electrons D) protons and electrons
A) Carbon and Boron B) Argon and Krypton C) Mercury and Thallium 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) region B) group C) period D) nucleus
A) Lithium B) Magnesium C) Beryllium D) Chlorine
A) number of neutrons B) group number C) period number 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) Group Number B) Period Number C) Number of Neutrons D) State of Matter
A) Francium B) Nitrogen C) Carbon D) Manganese
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 losing protons D) by adding electrons
A) by adding protons B) by losing electrons C) by losing protons D) by adding electrons
A) by losing protons B) by adding protons C) by adding electrons D) by losing electrons
A) by adding protons B) by adding or losing neutrons C) by adding electrons D) by adding neutrons
A) same as the atomic number B) difference between the atomic and mass number C) same as the mass number D) mass number divided by 2
A) the same as the mass number B) the same as the number of neutrons C) the difference between the mass and atomic number D) the same as the atomic number
A) Mg and F B) Hg and C C) Na and Li D) B and O
A) Mg and Cl B) Ba and Ra C) Li and Po D) F and At
A) The alkali earth metals B) The alkali metals C) The halogens D) The noble gases E) The transition metals
A) The alkali metals B) The halogens C) The noble gases D) The transition metals
A) 4 B) 17 C) 1 D) 18 E) 8
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) Silver D) Fluorine E) Sodium
A) Au B) F C) Li D) H E) Al
A) I B) Li C) Cs D) Mg E) Al
A) the number of neutrons B) the number of protons C) the number of electrons
A) Lewis B) Newton C) Dalton D) Bohr E) Mendeleev |