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