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