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