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