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