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