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