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