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