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