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