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