A) 23 B) 60 C) 51 D) 50
A) 3 B) 17 C) 7 D) 1
A) 9 B) 45 C) 5 D) 103
A) 15 B) 3 C) 4 D) 33
A) Alkali Metals B) Transition Metals C) Alkaline Earth Metals D) Noble Gases E) Halogens
A) 7 B) 14 C) 2 D) 14.007
A) 56 B) 2 C) 137 D) 6
A) 7 B) 1 C) 6 D) 2
A) Tellurium is a solid metalloid. B) Phosphorus is a non-metal gas. C) Chlorine is a liquid non-metal. D) Mercury is a solid metal.
A) 5 B) 6 C) 96 D) 42
A) 7 B) 4 C) 2 D) 3
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) neutrons and electrons C) protons and orbits D) protons and neutrons
A) Argon and Krypton B) Mercury and Thallium C) Phosphorus and Silicon D) Carbon and Boron
A) electrons orbit totally randomly around the nucleus B) the atom is mostly empty space C) atoms are tiny solid spheres D) the atom is a positively charged sphere with electrons embedded in it
A) nucleus B) group C) region D) period
A) Beryllium B) Lithium C) Magnesium D) Chlorine
A) period number B) number of protons C) number of neutrons D) group number
A) the same as the number of electrons B) the same as the number of energy levels C) greater than the mass number D) the mass number minus the atomic number
A) Number of Neutrons B) Period Number C) State of Matter D) Group Number
A) Nitrogen B) Carbon C) Manganese D) Francium
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 protons B) by losing electrons C) by adding electrons D) by adding protons
A) by adding electrons B) by losing electrons C) by losing protons D) by adding protons
A) by adding electrons B) by adding or losing neutrons C) by adding neutrons D) by adding protons
A) same as the atomic number B) same as the mass number C) mass number divided by 2 D) difference between the atomic and mass number
A) the difference between the mass and atomic number B) the same as the mass number C) the same as the number of neutrons D) the same as the atomic number
A) Hg and C B) B and O C) Na and Li D) Mg and F
A) Ba and Ra B) Mg and Cl C) Li and Po D) F and At
A) The noble gases B) The alkali earth metals C) The transition metals D) The halogens E) The alkali metals
A) The halogens B) The noble gases C) The alkali metals D) The transition metals
A) 17 B) 18 C) 1 D) 4 E) 8
A) how many electrons there are B) how many protons there are C) how reactive they are D) how many electron levels there are
A) the number of neutrons B) how many electrons the atom has C) how many valence electrons the atom has D) the number of protons
A) Mercury B) Sodium C) Fluorine D) Iron E) Silver
A) Li B) F C) Al D) Au E) H
A) Cs B) I C) Li D) Al E) Mg
A) the number of electrons B) the number of protons C) the number of neutrons
A) Lewis B) Mendeleev C) Newton D) Bohr E) Dalton |