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