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