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