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