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