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