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