A) 23 B) 50 C) 51 D) 60
A) 17 B) 7 C) 1 D) 3
A) 103 B) 9 C) 5 D) 45
A) 3 B) 4 C) 33 D) 15
A) Alkali Metals B) Noble Gases C) Alkaline Earth Metals D) Transition Metals E) Halogens
A) 2 B) 7 C) 14 D) 14.007
A) 137 B) 6 C) 56 D) 2
A) 7 B) 1 C) 2 D) 6
A) Mercury is a solid metal. B) Phosphorus is a non-metal gas. C) Chlorine is a liquid non-metal. D) Tellurium is a solid metalloid.
A) 96 B) 6 C) 5 D) 42
A) 3 B) 2 C) 4 D) 7
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 orbits C) protons and electrons D) protons and neutrons
A) Carbon and Boron B) Mercury and Thallium C) Argon and Krypton D) Phosphorus and Silicon
A) atoms are tiny solid spheres B) the atom is mostly empty space C) electrons orbit totally randomly around the nucleus D) the atom is a positively charged sphere with electrons embedded in it
A) region B) nucleus C) group D) period
A) Chlorine B) Beryllium C) Lithium D) Magnesium
A) period number B) group number C) number of protons D) number of neutrons
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) Group Number B) Number of Neutrons C) Period Number D) State of Matter
A) Francium B) Manganese C) Nitrogen 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 losing protons B) by adding electrons C) by adding protons D) By adding or losing electrons
A) by adding protons B) by losing protons C) by losing electrons D) by adding electrons
A) by adding protons B) by losing electrons C) by adding electrons D) by losing protons
A) by adding protons B) by adding electrons C) by adding neutrons D) by adding or losing neutrons
A) difference between the atomic and mass number B) mass number divided by 2 C) same as the mass number D) same as the atomic number
A) the difference between the mass and atomic number B) the same as the mass number C) the same as the number of neutrons D) the same as the atomic number
A) B and O B) Mg and F C) Na and Li D) Hg and C
A) F and At B) Mg and Cl C) Li and Po D) Ba and Ra
A) The alkali earth metals B) The noble gases C) The halogens D) The alkali metals E) The transition metals
A) The alkali metals B) The noble gases C) The transition metals D) The halogens
A) 1 B) 8 C) 4 D) 17 E) 18
A) how many electrons there are B) how many protons there are C) how many electron levels there are D) how reactive they are
A) how many valence electrons the atom has B) the number of protons C) how many electrons the atom has D) the number of neutrons
A) Silver B) Fluorine C) Sodium D) Iron E) Mercury
A) F B) Al C) H D) Au E) Li
A) Al B) Cs C) Li D) Mg E) I
A) the number of neutrons B) the number of electrons C) the number of protons
A) Lewis B) Newton C) Bohr D) Dalton E) Mendeleev |