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