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