A) 50 B) 51 C) 23 D) 60
A) 1 B) 7 C) 17 D) 3
A) 103 B) 45 C) 5 D) 9
A) 33 B) 4 C) 3 D) 15
A) Alkali Metals B) Transition Metals C) Alkaline Earth Metals D) Halogens E) Noble Gases
A) 2 B) 14 C) 14.007 D) 7
A) 137 B) 56 C) 2 D) 6
A) 7 B) 1 C) 6 D) 2
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) 5 D) 42
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) protons and neutrons C) neutrons and electrons D) protons and orbits
A) Argon and Krypton B) Carbon and Boron C) Mercury and Thallium D) Phosphorus and Silicon
A) atoms are tiny solid spheres B) the atom is mostly empty space C) the atom is a positively charged sphere with electrons embedded in it D) electrons orbit totally randomly around the nucleus
A) period B) region C) nucleus D) group
A) Lithium B) Magnesium C) Chlorine D) Beryllium
A) group number B) period number C) number of protons 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 energy levels D) the same as the number of electrons
A) State of Matter B) Number of Neutrons C) Group Number D) Period Number
A) Nitrogen B) Carbon C) Manganese D) Francium
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 protons B) by adding electrons C) By adding or losing electrons D) by losing protons
A) by adding electrons B) by losing protons C) by losing electrons D) by adding protons
A) by adding protons B) by adding electrons C) by losing protons D) by losing electrons
A) by adding protons B) by adding or losing neutrons C) by adding neutrons D) by adding electrons
A) same as the atomic number B) mass number divided by 2 C) difference between the atomic and mass number D) same as the mass number
A) the same as the atomic number B) the same as the number of neutrons C) the same as the mass number D) the difference between the mass and atomic number
A) Na and Li B) Mg and F C) B and O D) Hg and C
A) Li and Po B) Ba and Ra C) Mg and Cl D) F and At
A) The halogens B) The noble gases C) The alkali metals D) The transition metals E) The alkali earth metals
A) The transition metals B) The alkali metals C) The noble gases D) The halogens
A) 17 B) 8 C) 1 D) 4 E) 18
A) how reactive they are B) how many electron levels there 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) how many electrons the atom has D) the number of protons
A) Fluorine B) Sodium C) Mercury D) Silver E) Iron
A) Li B) H C) Al D) Au E) F
A) I B) Li C) Al D) Cs E) Mg
A) the number of electrons B) the number of neutrons C) the number of protons
A) Mendeleev B) Bohr C) Dalton D) Newton E) Lewis |