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