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