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