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