A) 50 B) 60 C) 23 D) 51
A) 17 B) 7 C) 1 D) 3
A) 103 B) 5 C) 9 D) 45
A) 3 B) 15 C) 4 D) 33
A) Halogens B) Alkali Metals C) Alkaline Earth Metals D) Transition Metals E) Noble Gases
A) 7 B) 2 C) 14 D) 14.007
A) 6 B) 2 C) 137 D) 56
A) 2 B) 6 C) 1 D) 7
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) 5 B) 96 C) 42 D) 6
A) 3 B) 7 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) 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) 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) group B) period C) region D) nucleus
A) Magnesium B) Lithium C) Beryllium D) Chlorine
A) group number B) number of protons C) number of neutrons D) period 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) Number of Neutrons B) Period Number C) Group Number D) State of Matter
A) Manganese B) Nitrogen C) Francium D) Carbon
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 losing protons D) by adding protons
A) by adding electrons B) by adding protons C) by losing electrons D) by losing protons
A) by adding protons B) by losing protons C) by losing electrons D) by adding electrons
A) by adding electrons B) by adding protons 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 same as the mass number B) the difference between the mass and atomic number C) the same as the number of neutrons D) the same as the atomic number
A) Mg and F B) Na and Li C) B and O D) Hg and C
A) Mg and Cl B) Ba and Ra C) F and At D) Li and Po
A) The halogens B) The transition metals C) The alkali earth metals D) The noble gases E) The alkali metals
A) The transition metals B) The noble gases C) The halogens D) The alkali metals
A) 8 B) 4 C) 17 D) 1 E) 18
A) how many electron levels there are B) how reactive they are C) how many protons there are D) how many electrons there are
A) the number of neutrons B) how many electrons the atom has C) the number of protons D) how many valence electrons the atom has
A) Iron B) Silver C) Sodium D) Fluorine E) Mercury
A) Al B) F C) H D) Au E) Li
A) Cs B) Al C) I D) Li E) Mg
A) the number of electrons B) the number of protons C) the number of neutrons
A) Mendeleev B) Bohr C) Dalton D) Newton E) Lewis |