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