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