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