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