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