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