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