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