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