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