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