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