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