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