A) 23 B) 51 C) 50 D) 60
A) 1 B) 7 C) 3 D) 17
A) 45 B) 103 C) 9 D) 5
A) 4 B) 15 C) 3 D) 33
A) Noble Gases B) Alkali Metals C) Alkaline Earth Metals D) Transition Metals E) Halogens
A) 7 B) 14.007 C) 2 D) 14
A) 2 B) 56 C) 6 D) 137
A) 7 B) 6 C) 1 D) 2
A) Tellurium is a solid metalloid. B) Chlorine is a liquid non-metal. C) Phosphorus is a non-metal gas. D) Mercury is a solid metal.
A) 6 B) 96 C) 42 D) 5
A) 3 B) 2 C) 4 D) 7
A) proton/+, electron/-, neutron/uncharged B) proton/+, neutron/-, electron/no charge C) proton/+, electron/neutral, neutron/- D) proton/-, electron/+, neutron/no charge
A) protons and orbits B) protons and neutrons C) neutrons and electrons D) protons and electrons
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) period C) group D) nucleus
A) Chlorine B) Lithium C) Beryllium D) Magnesium
A) number of protons B) number of neutrons C) period number D) group number
A) the same as the number of electrons B) the mass number minus the atomic number 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) Carbon B) Francium 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 or losing electrons B) by losing protons C) by adding electrons D) by adding protons
A) by losing protons B) by adding electrons C) by adding protons D) by losing electrons
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) difference between the atomic and mass number C) mass number divided by 2 D) same as the atomic number
A) the same as the number of neutrons B) the same as the mass number C) the same as the atomic number D) the difference between the mass and atomic number
A) Mg and F B) Hg and C C) Na and Li D) B and O
A) Li and Po B) Mg and Cl C) Ba and Ra D) F and At
A) The alkali metals B) The alkali earth metals C) The transition metals D) The noble gases E) The halogens
A) The halogens B) The transition metals C) The alkali metals D) The noble gases
A) 17 B) 4 C) 1 D) 8 E) 18
A) how reactive they are B) how many protons there are C) how many electrons there are D) how many electron levels there are
A) the number of protons B) the number of neutrons C) how many electrons the atom has D) how many valence electrons the atom has
A) Iron B) Silver C) Mercury D) Fluorine E) Sodium
A) Li B) H C) Al D) Au E) F
A) Cs B) I C) Mg D) Al E) Li
A) the number of electrons B) the number of neutrons C) the number of protons
A) Dalton B) Newton C) Lewis D) Bohr E) Mendeleev |