A) 60 B) 50 C) 23 D) 51
A) 17 B) 7 C) 3 D) 1
A) 45 B) 9 C) 5 D) 103
A) 3 B) 15 C) 4 D) 33
A) Noble Gases B) Alkaline Earth Metals C) Alkaline Metals D) Halogens
A) 2 B) 7 C) 14 D) 14.007
A) 6 B) 2 C) 56 D) 137
A) 2 B) 6 C) 1 D) 7
A) Tellurium is a solid metalloid. B) Mercury is a solid metal. C) Phosphorus is a non-metal gas. D) Chlorine is a liquid non-metal.
A) 42 B) 6 C) 5 D) 96
A) 4 B) 7 C) 3 D) 2
A) Bohr B) Thomson C) Dalton D) Rutherford
A) Rutherford B) Dalton C) Bohr D) Thomson
A) Rutherford B) Dalton C) Thomson D) Bohr
A) Bohr B) Thomson C) Dalton D) Rutherford
A) Dalton, Thomson, Bohr, Rutherford B) Dalton, Rutherford, Thomson, Bohr C) Dalton, Thomson, Rutherford, Bohr D) Bohr, Rutherford, Dalton, Thomson
A) proton = negative, electron = positive, neutron = no charge B) proton = positive, electron = negative, neutron = uncharged C) proton = positive, electron = neutral, neutron = negative D) proton = positive, neutron = negative, electron = no charge
A) chemical property B) physical change C) chemical change D) physical property
A) neutrons and electrons B) protons and orbits C) protons and neutrons D) protons and electrons
A) Argon and Krypton B) Mercury and Thallium C) Carbon and Boron D) Phosphorus and Silicon
A) Electron Cloud B) Dalton's Model C) Rutherford's Model D) Bohr's Model E) Thomson's Model
A) atoms are tiny solid spheres B) the atom is a positively charged sphere with electrons embedded in it C) electrons orbit totally randomly around the nucleus D) the atom is mostly empty space
A) period B) region C) nucleus D) group
A) Magnesium B) Lithium C) Beryllium D) Chlorine
A) State of Matter B) Number of Neutrons C) Group Number D) Period Number
A) number of neutrons B) period number C) number of protons D) group number
A) the mass number minus the atomic number B) greater than the mass number C) the same as the number of energy levels D) the same as the number of electrons
A) State of Matter B) Period Number C) Group Number D) Number of Neutrons
A) Nitrogen B) Francium 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. |