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