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