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