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