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