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