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