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