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