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