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