A) 23 B) 50 C) 60 D) 51
A) 7 B) 3 C) 17 D) 1
A) 45 B) 9 C) 5 D) 103
A) 4 B) 3 C) 33 D) 15
A) Halogens B) Alkaline Earth Metals C) Noble Gases D) Alkali Metals E) Transition Metals
A) 14 B) 2 C) 7 D) 14.007
A) 2 B) 6 C) 137 D) 56
A) 2 B) 7 C) 1 D) 6
A) Tellurium is a solid metalloid. B) Mercury is a solid metal. C) Chlorine is a liquid non-metal. D) Phosphorus is a non-metal gas.
A) 5 B) 96 C) 42 D) 6
A) 4 B) 2 C) 7 D) 3
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 neutrons B) protons and orbits C) neutrons and electrons D) protons and electrons
A) Phosphorus and Silicon B) Carbon and Boron C) Argon and Krypton D) Mercury and Thallium
A) the atom is a positively charged sphere with electrons embedded in it B) the atom is mostly empty space C) electrons orbit totally randomly around the nucleus D) atoms are tiny solid spheres
A) nucleus B) group C) period D) region
A) Magnesium B) Chlorine C) Lithium D) Beryllium
A) number of protons B) number of neutrons C) period number D) group number
A) greater than the mass number B) the same as the number of energy levels C) the same as the number of electrons D) the mass number minus the atomic number
A) Period Number B) Number of Neutrons C) State of Matter D) Group Number
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 adding electrons C) by adding protons D) by losing protons
A) by adding electrons B) by adding protons C) by losing electrons D) by losing protons
A) by adding protons B) by adding electrons C) by losing protons D) by losing electrons
A) by adding or losing neutrons B) by adding neutrons C) by adding protons D) by adding electrons
A) same as the atomic number B) difference between the atomic and mass number C) mass number divided by 2 D) same as the 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) Hg and C B) Mg and F C) B and O D) Na and Li
A) Li and Po B) F and At C) Mg and Cl D) Ba and Ra
A) The halogens B) The alkali metals C) The alkali earth metals D) The noble gases E) The transition metals
A) The alkali metals B) The noble gases C) The transition metals D) The halogens
A) 4 B) 1 C) 17 D) 18 E) 8
A) how many protons there are B) how many electrons there are C) how many electron levels there are D) how reactive they 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) Silver B) Mercury C) Iron D) Fluorine E) Sodium
A) Au B) Li C) H D) F E) Al
A) Al B) Mg C) Cs D) I E) Li
A) the number of protons B) the number of electrons C) the number of neutrons
A) Dalton B) Lewis C) Bohr D) Mendeleev E) Newton |