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