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