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