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