A) 50 B) 60 C) 51 D) 23
A) 3 B) 1 C) 7 D) 17
A) 9 B) 45 C) 5 D) 103
A) 4 B) 15 C) 33 D) 3
A) Noble Gases B) Alkaline Earth Metals C) Halogens D) Transition Metals E) Alkali Metals
A) 14.007 B) 2 C) 7 D) 14
A) 6 B) 2 C) 137 D) 56
A) 7 B) 1 C) 6 D) 2
A) Mercury is a solid metal. B) Chlorine is a liquid non-metal. C) Tellurium is a solid metalloid. D) Phosphorus is a non-metal gas.
A) 96 B) 42 C) 6 D) 5
A) 7 B) 2 C) 4 D) 3
A) proton/+, electron/-, neutron/uncharged B) proton/-, electron/+, neutron/no charge C) proton/+, neutron/-, electron/no charge D) proton/+, electron/neutral, neutron/-
A) protons and orbits B) protons and neutrons C) protons and electrons D) neutrons and electrons
A) Argon and Krypton B) Phosphorus and Silicon C) Carbon and Boron D) Mercury and Thallium
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) nucleus B) region C) period D) group
A) Beryllium B) Lithium C) Chlorine D) Magnesium
A) period number B) group number C) number of protons D) number of neutrons
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) State of Matter B) Number of Neutrons C) Period Number D) Group Number
A) Nitrogen B) Manganese C) Francium D) Carbon
A) Yes, some Carbon atoms have 6 protons, some have 7 protons. B) No, every single Carbon atom has exactly 6 protons. An atom's atomic number gives it its identity.
A) By adding or losing electrons B) by losing protons C) by adding protons D) by adding electrons
A) by losing protons B) by adding electrons C) by adding protons D) by losing electrons
A) by adding protons B) by losing protons C) by adding electrons D) by losing electrons
A) by adding neutrons B) by adding or losing neutrons C) by adding electrons D) by adding protons
A) same as the mass number B) same as the atomic number C) mass number divided by 2 D) difference between the atomic and mass number
A) the same as the atomic number B) the difference between the mass and atomic number C) the same as the number of neutrons D) the same as the mass number
A) B and O B) Na and Li C) Hg and C D) Mg and F
A) Li and Po B) F and At C) Mg and Cl D) Ba and Ra
A) The transition metals B) The halogens C) The alkali earth metals D) The alkali metals E) The noble gases
A) The noble gases B) The transition metals C) The halogens D) The alkali metals
A) 17 B) 4 C) 8 D) 1 E) 18
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) the number of neutrons C) how many valence electrons the atom has D) the number of protons
A) Silver B) Iron C) Mercury D) Fluorine E) Sodium
A) H B) Au C) F D) Al E) Li
A) Al B) Mg C) Cs D) Li E) I
A) the number of electrons B) the number of protons C) the number of neutrons
A) Lewis B) Newton C) Dalton D) Bohr E) Mendeleev |