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