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